mirror of https://github.com/openssl/openssl.git
4183 lines
119 KiB
C
4183 lines
119 KiB
C
/*
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* Copyright 2022-2024 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/macros.h>
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#include <openssl/objects.h>
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#include <openssl/sslerr.h>
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#include <crypto/rand.h>
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#include "quic_local.h"
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#include "internal/quic_tls.h"
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#include "internal/quic_rx_depack.h"
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#include "internal/quic_error.h"
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#include "internal/quic_engine.h"
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#include "internal/quic_port.h"
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#include "internal/time.h"
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typedef struct qctx_st QCTX;
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static void aon_write_finish(QUIC_XSO *xso);
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static int create_channel(QUIC_CONNECTION *qc);
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static QUIC_XSO *create_xso_from_stream(QUIC_CONNECTION *qc, QUIC_STREAM *qs);
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static int qc_try_create_default_xso_for_write(QCTX *ctx);
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static int qc_wait_for_default_xso_for_read(QCTX *ctx, int peek);
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static void quic_lock(QUIC_CONNECTION *qc);
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static void quic_unlock(QUIC_CONNECTION *qc);
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static void quic_lock_for_io(QCTX *ctx);
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static int quic_do_handshake(QCTX *ctx);
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static void qc_update_reject_policy(QUIC_CONNECTION *qc);
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static void qc_touch_default_xso(QUIC_CONNECTION *qc);
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static void qc_set_default_xso(QUIC_CONNECTION *qc, QUIC_XSO *xso, int touch);
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static void qc_set_default_xso_keep_ref(QUIC_CONNECTION *qc, QUIC_XSO *xso,
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int touch, QUIC_XSO **old_xso);
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static SSL *quic_conn_stream_new(QCTX *ctx, uint64_t flags, int need_lock);
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static int quic_validate_for_write(QUIC_XSO *xso, int *err);
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static int quic_mutation_allowed(QUIC_CONNECTION *qc, int req_active);
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static int qc_blocking_mode(const QUIC_CONNECTION *qc);
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static int xso_blocking_mode(const QUIC_XSO *xso);
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static void qctx_maybe_autotick(QCTX *ctx);
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static int qctx_should_autotick(QCTX *ctx);
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/*
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* QUIC Front-End I/O API: Common Utilities
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* ========================================
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*/
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/*
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* Block until a predicate is met.
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*
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* Precondition: Must have a channel.
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* Precondition: Must hold channel lock (unchecked).
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*/
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QUIC_NEEDS_LOCK
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static int block_until_pred(QUIC_CONNECTION *qc,
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int (*pred)(void *arg), void *pred_arg,
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uint32_t flags)
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{
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QUIC_REACTOR *rtor;
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assert(qc->ch != NULL);
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/*
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* Any attempt to block auto-disables tick inhibition as otherwise we will
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* hang around forever.
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*/
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ossl_quic_engine_set_inhibit_tick(qc->engine, 0);
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rtor = ossl_quic_channel_get_reactor(qc->ch);
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return ossl_quic_reactor_block_until_pred(rtor, pred, pred_arg, flags,
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qc->mutex);
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}
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static OSSL_TIME get_time(QUIC_CONNECTION *qc)
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{
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if (qc->override_now_cb != NULL)
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return qc->override_now_cb(qc->override_now_cb_arg);
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else
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return ossl_time_now();
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}
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static OSSL_TIME get_time_cb(void *arg)
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{
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QUIC_CONNECTION *qc = arg;
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return get_time(qc);
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}
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/*
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* QCTX is a utility structure which provides information we commonly wish to
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* unwrap upon an API call being dispatched to us, namely:
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*
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* - a pointer to the QUIC_CONNECTION (regardless of whether a QCSO or QSSO
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* was passed);
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* - a pointer to any applicable QUIC_XSO (e.g. if a QSSO was passed, or if
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* a QCSO with a default stream was passed);
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* - whether a QSSO was passed (xso == NULL must not be used to determine this
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* because it may be non-NULL when a QCSO is passed if that QCSO has a
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* default stream);
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* - whether we are in "I/O context", meaning that non-normal errors can
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* be reported via SSL_get_error() as well as via ERR. Functions such as
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* SSL_read(), SSL_write() and SSL_do_handshake() are "I/O context"
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* functions which are allowed to change the value returned by
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* SSL_get_error. However, other functions (including functions which call
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* SSL_do_handshake() implicitly) are not allowed to change the return value
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* of SSL_get_error.
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*/
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struct qctx_st {
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QUIC_CONNECTION *qc;
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QUIC_XSO *xso;
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int is_stream, in_io;
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};
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QUIC_NEEDS_LOCK
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static void quic_set_last_error(QCTX *ctx, int last_error)
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{
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if (!ctx->in_io)
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return;
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if (ctx->is_stream && ctx->xso != NULL)
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ctx->xso->last_error = last_error;
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else if (!ctx->is_stream && ctx->qc != NULL)
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ctx->qc->last_error = last_error;
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}
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/*
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* Raise a 'normal' error, meaning one that can be reported via SSL_get_error()
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* rather than via ERR. Note that normal errors must always be raised while
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* holding a lock.
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*/
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QUIC_NEEDS_LOCK
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static int quic_raise_normal_error(QCTX *ctx,
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int err)
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{
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assert(ctx->in_io);
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quic_set_last_error(ctx, err);
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return 0;
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}
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/*
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* Raise a 'non-normal' error, meaning any error that is not reported via
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* SSL_get_error() and must be reported via ERR.
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*
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* qc should be provided if available. In exceptional circumstances when qc is
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* not known NULL may be passed. This should generally only happen when an
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* expect_...() function defined below fails, which generally indicates a
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* dispatch error or caller error.
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*
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* ctx should be NULL if the connection lock is not held.
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*/
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static int quic_raise_non_normal_error(QCTX *ctx,
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const char *file,
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int line,
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const char *func,
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int reason,
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const char *fmt,
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...)
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{
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va_list args;
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if (ctx != NULL) {
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quic_set_last_error(ctx, SSL_ERROR_SSL);
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if (reason == SSL_R_PROTOCOL_IS_SHUTDOWN && ctx->qc != NULL)
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ossl_quic_channel_restore_err_state(ctx->qc->ch);
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}
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ERR_new();
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ERR_set_debug(file, line, func);
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va_start(args, fmt);
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ERR_vset_error(ERR_LIB_SSL, reason, fmt, args);
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va_end(args);
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return 0;
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}
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#define QUIC_RAISE_NORMAL_ERROR(ctx, err) \
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quic_raise_normal_error((ctx), (err))
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#define QUIC_RAISE_NON_NORMAL_ERROR(ctx, reason, msg) \
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quic_raise_non_normal_error((ctx), \
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OPENSSL_FILE, OPENSSL_LINE, \
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OPENSSL_FUNC, \
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(reason), \
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(msg))
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/*
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* Given a QCSO or QSSO, initialises a QCTX, determining the contextually
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* applicable QUIC_CONNECTION pointer and, if applicable, QUIC_XSO pointer.
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*
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* After this returns 1, all fields of the passed QCTX are initialised.
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* Returns 0 on failure. This function is intended to be used to provide API
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* semantics and as such, it invokes QUIC_RAISE_NON_NORMAL_ERROR() on failure.
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*/
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static int expect_quic(const SSL *s, QCTX *ctx)
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{
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QUIC_CONNECTION *qc;
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QUIC_XSO *xso;
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ctx->qc = NULL;
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ctx->xso = NULL;
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ctx->is_stream = 0;
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if (s == NULL)
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return QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_PASSED_NULL_PARAMETER, NULL);
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switch (s->type) {
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case SSL_TYPE_QUIC_CONNECTION:
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qc = (QUIC_CONNECTION *)s;
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ctx->qc = qc;
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ctx->xso = qc->default_xso;
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ctx->is_stream = 0;
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ctx->in_io = 0;
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return 1;
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case SSL_TYPE_QUIC_XSO:
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xso = (QUIC_XSO *)s;
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ctx->qc = xso->conn;
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ctx->xso = xso;
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ctx->is_stream = 1;
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ctx->in_io = 0;
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return 1;
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default:
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return QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_INTERNAL_ERROR, NULL);
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}
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}
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/*
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* Like expect_quic(), but requires a QUIC_XSO be contextually available. In
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* other words, requires that the passed QSO be a QSSO or a QCSO with a default
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* stream.
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*
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* remote_init determines if we expect the default XSO to be remotely created or
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* not. If it is -1, do not instantiate a default XSO if one does not yet exist.
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*
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* Channel mutex is acquired and retained on success.
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*/
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QUIC_ACQUIRES_LOCK
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static int ossl_unused expect_quic_with_stream_lock(const SSL *s, int remote_init,
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int in_io, QCTX *ctx)
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{
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if (!expect_quic(s, ctx))
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return 0;
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if (in_io)
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quic_lock_for_io(ctx);
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else
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quic_lock(ctx->qc);
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if (ctx->xso == NULL && remote_init >= 0) {
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if (!quic_mutation_allowed(ctx->qc, /*req_active=*/0)) {
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QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
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goto err;
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}
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/* If we haven't finished the handshake, try to advance it. */
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if (quic_do_handshake(ctx) < 1)
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/* ossl_quic_do_handshake raised error here */
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goto err;
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if (remote_init == 0) {
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if (!qc_try_create_default_xso_for_write(ctx))
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goto err;
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} else {
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if (!qc_wait_for_default_xso_for_read(ctx, /*peek=*/0))
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goto err;
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}
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ctx->xso = ctx->qc->default_xso;
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}
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if (ctx->xso == NULL) {
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QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_NO_STREAM, NULL);
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goto err;
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}
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return 1; /* coverity[missing_unlock]: lock held */
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err:
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quic_unlock(ctx->qc);
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return 0;
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}
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/*
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* Like expect_quic(), but fails if called on a QUIC_XSO. ctx->xso may still
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* be non-NULL if the QCSO has a default stream.
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*/
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static int ossl_unused expect_quic_conn_only(const SSL *s, QCTX *ctx)
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{
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if (!expect_quic(s, ctx))
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return 0;
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if (ctx->is_stream)
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return QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_CONN_USE_ONLY, NULL);
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return 1;
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}
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/*
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* Ensures that the channel mutex is held for a method which touches channel
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* state.
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*
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* Precondition: Channel mutex is not held (unchecked)
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*/
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static void quic_lock(QUIC_CONNECTION *qc)
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{
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#if defined(OPENSSL_THREADS)
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ossl_crypto_mutex_lock(qc->mutex);
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#endif
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}
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static void quic_lock_for_io(QCTX *ctx)
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{
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quic_lock(ctx->qc);
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ctx->in_io = 1;
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/*
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* We are entering an I/O function so we must update the values returned by
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* SSL_get_error and SSL_want. Set no error. This will be overridden later
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* if a call to QUIC_RAISE_NORMAL_ERROR or QUIC_RAISE_NON_NORMAL_ERROR
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* occurs during the API call.
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*/
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quic_set_last_error(ctx, SSL_ERROR_NONE);
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}
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/* Precondition: Channel mutex is held (unchecked) */
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QUIC_NEEDS_LOCK
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static void quic_unlock(QUIC_CONNECTION *qc)
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{
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#if defined(OPENSSL_THREADS)
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ossl_crypto_mutex_unlock(qc->mutex);
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#endif
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}
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/*
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* This predicate is the criterion which should determine API call rejection for
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* *most* mutating API calls, particularly stream-related operations for send
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* parts.
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*
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* A call is rejected (this function returns 0) if shutdown is in progress
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* (stream flushing), or we are in a TERMINATING or TERMINATED state. If
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* req_active=1, the connection must be active (i.e., the IDLE state is also
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* rejected).
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*/
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static int quic_mutation_allowed(QUIC_CONNECTION *qc, int req_active)
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{
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if (qc->shutting_down || ossl_quic_channel_is_term_any(qc->ch))
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return 0;
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if (req_active && !ossl_quic_channel_is_active(qc->ch))
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return 0;
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|
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return 1;
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}
|
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|
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/*
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* QUIC Front-End I/O API: Initialization
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* ======================================
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*
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* SSL_new => ossl_quic_new
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* ossl_quic_init
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* SSL_reset => ossl_quic_reset
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* SSL_clear => ossl_quic_clear
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* ossl_quic_deinit
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* SSL_free => ossl_quic_free
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*
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* SSL_set_options => ossl_quic_set_options
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* SSL_get_options => ossl_quic_get_options
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* SSL_clear_options => ossl_quic_clear_options
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*
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*/
|
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/* SSL_new */
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SSL *ossl_quic_new(SSL_CTX *ctx)
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{
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QUIC_CONNECTION *qc = NULL;
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SSL *ssl_base = NULL;
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SSL_CONNECTION *sc = NULL;
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|
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qc = OPENSSL_zalloc(sizeof(*qc));
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if (qc == NULL) {
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QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_CRYPTO_LIB, NULL);
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return NULL;
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}
|
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#if defined(OPENSSL_THREADS)
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if ((qc->mutex = ossl_crypto_mutex_new()) == NULL) {
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QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_CRYPTO_LIB, NULL);
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goto err;
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}
|
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#endif
|
|
|
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/* Initialise the QUIC_CONNECTION's stub header. */
|
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ssl_base = &qc->ssl;
|
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if (!ossl_ssl_init(ssl_base, ctx, ctx->method, SSL_TYPE_QUIC_CONNECTION)) {
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ssl_base = NULL;
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|
QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_INTERNAL_ERROR, NULL);
|
|
goto err;
|
|
}
|
|
|
|
qc->tls = ossl_ssl_connection_new_int(ctx, TLS_method());
|
|
if (qc->tls == NULL || (sc = SSL_CONNECTION_FROM_SSL(qc->tls)) == NULL) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_INTERNAL_ERROR, NULL);
|
|
goto err;
|
|
}
|
|
|
|
/* override the user_ssl of the inner connection */
|
|
sc->s3.flags |= TLS1_FLAGS_QUIC;
|
|
|
|
/* Restrict options derived from the SSL_CTX. */
|
|
sc->options &= OSSL_QUIC_PERMITTED_OPTIONS_CONN;
|
|
sc->pha_enabled = 0;
|
|
|
|
#if !defined(OPENSSL_NO_QUIC_THREAD_ASSIST)
|
|
qc->is_thread_assisted
|
|
= (ssl_base->method == OSSL_QUIC_client_thread_method());
|
|
#endif
|
|
|
|
qc->as_server = 0; /* TODO(QUIC SERVER): add server support */
|
|
qc->as_server_state = qc->as_server;
|
|
|
|
qc->default_stream_mode = SSL_DEFAULT_STREAM_MODE_AUTO_BIDI;
|
|
qc->default_ssl_mode = qc->ssl.ctx->mode;
|
|
qc->default_ssl_options = qc->ssl.ctx->options & OSSL_QUIC_PERMITTED_OPTIONS;
|
|
qc->desires_blocking = 1;
|
|
qc->blocking = 0;
|
|
qc->incoming_stream_policy = SSL_INCOMING_STREAM_POLICY_AUTO;
|
|
qc->last_error = SSL_ERROR_NONE;
|
|
|
|
if (!create_channel(qc))
|
|
goto err;
|
|
|
|
ossl_quic_channel_set_msg_callback(qc->ch, ctx->msg_callback, ssl_base);
|
|
ossl_quic_channel_set_msg_callback_arg(qc->ch, ctx->msg_callback_arg);
|
|
|
|
qc_update_reject_policy(qc);
|
|
|
|
/*
|
|
* We do not create the default XSO yet. The reason for this is that the
|
|
* stream ID of the default XSO will depend on whether the stream is client
|
|
* or server-initiated, which depends on who transmits first. Since we do
|
|
* not know whether the application will be using a client-transmits-first
|
|
* or server-transmits-first protocol, we defer default XSO creation until
|
|
* the client calls SSL_read() or SSL_write(). If it calls SSL_read() first,
|
|
* we take that as a cue that the client is expecting a server-initiated
|
|
* stream, and vice versa if SSL_write() is called first.
|
|
*/
|
|
return ssl_base;
|
|
|
|
err:
|
|
if (ssl_base == NULL) {
|
|
#if defined(OPENSSL_THREADS)
|
|
ossl_crypto_mutex_free(&qc->mutex);
|
|
#endif
|
|
OPENSSL_free(qc);
|
|
} else {
|
|
SSL_free(ssl_base);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* SSL_free */
|
|
QUIC_TAKES_LOCK
|
|
void ossl_quic_free(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
int is_default;
|
|
|
|
/* We should never be called on anything but a QSO. */
|
|
if (!expect_quic(s, &ctx))
|
|
return;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
if (ctx.is_stream) {
|
|
/*
|
|
* When a QSSO is freed, the XSO is freed immediately, because the XSO
|
|
* itself only contains API personality layer data. However the
|
|
* underlying QUIC_STREAM is not freed immediately but is instead marked
|
|
* as deleted for later collection.
|
|
*/
|
|
|
|
assert(ctx.qc->num_xso > 0);
|
|
--ctx.qc->num_xso;
|
|
|
|
/* If a stream's send part has not been finished, auto-reset it. */
|
|
if (( ctx.xso->stream->send_state == QUIC_SSTREAM_STATE_READY
|
|
|| ctx.xso->stream->send_state == QUIC_SSTREAM_STATE_SEND)
|
|
&& !ossl_quic_sstream_get_final_size(ctx.xso->stream->sstream, NULL))
|
|
ossl_quic_stream_map_reset_stream_send_part(ossl_quic_channel_get_qsm(ctx.qc->ch),
|
|
ctx.xso->stream, 0);
|
|
|
|
/* Do STOP_SENDING for the receive part, if applicable. */
|
|
if ( ctx.xso->stream->recv_state == QUIC_RSTREAM_STATE_RECV
|
|
|| ctx.xso->stream->recv_state == QUIC_RSTREAM_STATE_SIZE_KNOWN)
|
|
ossl_quic_stream_map_stop_sending_recv_part(ossl_quic_channel_get_qsm(ctx.qc->ch),
|
|
ctx.xso->stream, 0);
|
|
|
|
/* Update stream state. */
|
|
ctx.xso->stream->deleted = 1;
|
|
ossl_quic_stream_map_update_state(ossl_quic_channel_get_qsm(ctx.qc->ch),
|
|
ctx.xso->stream);
|
|
|
|
is_default = (ctx.xso == ctx.qc->default_xso);
|
|
quic_unlock(ctx.qc);
|
|
|
|
/*
|
|
* Unref the connection in most cases; the XSO has a ref to the QC and
|
|
* not vice versa. But for a default XSO, to avoid circular references,
|
|
* the QC refs the XSO but the XSO does not ref the QC. If we are the
|
|
* default XSO, we only get here when the QC is being torn down anyway,
|
|
* so don't call SSL_free(qc) as we are already in it.
|
|
*/
|
|
if (!is_default)
|
|
SSL_free(&ctx.qc->ssl);
|
|
|
|
/* Note: SSL_free calls OPENSSL_free(xso) for us */
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Free the default XSO, if any. The QUIC_STREAM is not deleted at this
|
|
* stage, but is freed during the channel free when the whole QSM is freed.
|
|
*/
|
|
if (ctx.qc->default_xso != NULL) {
|
|
QUIC_XSO *xso = ctx.qc->default_xso;
|
|
|
|
quic_unlock(ctx.qc);
|
|
SSL_free(&xso->ssl);
|
|
quic_lock(ctx.qc);
|
|
ctx.qc->default_xso = NULL;
|
|
}
|
|
|
|
/* Ensure we have no remaining XSOs. */
|
|
assert(ctx.qc->num_xso == 0);
|
|
|
|
#if !defined(OPENSSL_NO_QUIC_THREAD_ASSIST)
|
|
if (ctx.qc->is_thread_assisted && ctx.qc->started) {
|
|
ossl_quic_thread_assist_wait_stopped(&ctx.qc->thread_assist);
|
|
ossl_quic_thread_assist_cleanup(&ctx.qc->thread_assist);
|
|
}
|
|
#endif
|
|
|
|
SSL_free(ctx.qc->tls);
|
|
|
|
ossl_quic_channel_free(ctx.qc->ch);
|
|
ossl_quic_port_free(ctx.qc->port);
|
|
ossl_quic_engine_free(ctx.qc->engine);
|
|
|
|
BIO_free_all(ctx.qc->net_rbio);
|
|
BIO_free_all(ctx.qc->net_wbio);
|
|
|
|
quic_unlock(ctx.qc); /* tsan doesn't like freeing locked mutexes */
|
|
#if defined(OPENSSL_THREADS)
|
|
ossl_crypto_mutex_free(&ctx.qc->mutex);
|
|
#endif
|
|
|
|
/*
|
|
* Note: SSL_free (that called this function) calls OPENSSL_free(ctx.qc) for
|
|
* us
|
|
*/
|
|
}
|
|
|
|
/* SSL method init */
|
|
int ossl_quic_init(SSL *s)
|
|
{
|
|
/* Same op as SSL_clear, forward the call. */
|
|
return ossl_quic_clear(s);
|
|
}
|
|
|
|
/* SSL method deinit */
|
|
void ossl_quic_deinit(SSL *s)
|
|
{
|
|
/* No-op. */
|
|
}
|
|
|
|
/* SSL_clear (ssl_reset method) */
|
|
int ossl_quic_reset(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
ERR_raise(ERR_LIB_SSL, ERR_R_UNSUPPORTED);
|
|
return 0;
|
|
}
|
|
|
|
/* ssl_clear method (unused) */
|
|
int ossl_quic_clear(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
ERR_raise(ERR_LIB_SSL, ERR_R_UNSUPPORTED);
|
|
return 0;
|
|
}
|
|
|
|
int ossl_quic_conn_set_override_now_cb(SSL *s,
|
|
OSSL_TIME (*now_cb)(void *arg),
|
|
void *now_cb_arg)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
ctx.qc->override_now_cb = now_cb;
|
|
ctx.qc->override_now_cb_arg = now_cb_arg;
|
|
|
|
quic_unlock(ctx.qc);
|
|
return 1;
|
|
}
|
|
|
|
void ossl_quic_conn_force_assist_thread_wake(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return;
|
|
|
|
#if !defined(OPENSSL_NO_QUIC_THREAD_ASSIST)
|
|
if (ctx.qc->is_thread_assisted && ctx.qc->started)
|
|
ossl_quic_thread_assist_notify_deadline_changed(&ctx.qc->thread_assist);
|
|
#endif
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static void qc_touch_default_xso(QUIC_CONNECTION *qc)
|
|
{
|
|
qc->default_xso_created = 1;
|
|
qc_update_reject_policy(qc);
|
|
}
|
|
|
|
/*
|
|
* Changes default XSO. Allows caller to keep reference to the old default XSO
|
|
* (if any). Reference to new XSO is transferred from caller.
|
|
*/
|
|
QUIC_NEEDS_LOCK
|
|
static void qc_set_default_xso_keep_ref(QUIC_CONNECTION *qc, QUIC_XSO *xso,
|
|
int touch,
|
|
QUIC_XSO **old_xso)
|
|
{
|
|
int refs;
|
|
|
|
*old_xso = NULL;
|
|
|
|
if (qc->default_xso != xso) {
|
|
*old_xso = qc->default_xso; /* transfer old XSO ref to caller */
|
|
|
|
qc->default_xso = xso;
|
|
|
|
if (xso == NULL) {
|
|
/*
|
|
* Changing to not having a default XSO. XSO becomes standalone and
|
|
* now has a ref to the QC.
|
|
*/
|
|
if (!ossl_assert(SSL_up_ref(&qc->ssl)))
|
|
return;
|
|
} else {
|
|
/*
|
|
* Changing from not having a default XSO to having one. The new XSO
|
|
* will have had a reference to the QC we need to drop to avoid a
|
|
* circular reference.
|
|
*
|
|
* Currently we never change directly from one default XSO to
|
|
* another, though this function would also still be correct if this
|
|
* weren't the case.
|
|
*/
|
|
assert(*old_xso == NULL);
|
|
|
|
CRYPTO_DOWN_REF(&qc->ssl.references, &refs);
|
|
assert(refs > 0);
|
|
}
|
|
}
|
|
|
|
if (touch)
|
|
qc_touch_default_xso(qc);
|
|
}
|
|
|
|
/*
|
|
* Changes default XSO, releasing the reference to any previous default XSO.
|
|
* Reference to new XSO is transferred from caller.
|
|
*/
|
|
QUIC_NEEDS_LOCK
|
|
static void qc_set_default_xso(QUIC_CONNECTION *qc, QUIC_XSO *xso, int touch)
|
|
{
|
|
QUIC_XSO *old_xso = NULL;
|
|
|
|
qc_set_default_xso_keep_ref(qc, xso, touch, &old_xso);
|
|
|
|
if (old_xso != NULL)
|
|
SSL_free(&old_xso->ssl);
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static void xso_update_options(QUIC_XSO *xso)
|
|
{
|
|
int cleanse = ((xso->ssl_options & SSL_OP_CLEANSE_PLAINTEXT) != 0);
|
|
|
|
if (xso->stream->rstream != NULL)
|
|
ossl_quic_rstream_set_cleanse(xso->stream->rstream, cleanse);
|
|
|
|
if (xso->stream->sstream != NULL)
|
|
ossl_quic_sstream_set_cleanse(xso->stream->sstream, cleanse);
|
|
}
|
|
|
|
/*
|
|
* SSL_set_options
|
|
* ---------------
|
|
*
|
|
* Setting options on a QCSO
|
|
* - configures the handshake-layer options;
|
|
* - configures the default data-plane options for new streams;
|
|
* - configures the data-plane options on the default XSO, if there is one.
|
|
*
|
|
* Setting options on a QSSO
|
|
* - configures data-plane options for that stream only.
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
static uint64_t quic_mask_or_options(SSL *ssl, uint64_t mask_value, uint64_t or_value)
|
|
{
|
|
QCTX ctx;
|
|
uint64_t hs_mask_value, hs_or_value, ret;
|
|
|
|
if (!expect_quic(ssl, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
if (!ctx.is_stream) {
|
|
/*
|
|
* If we were called on the connection, we apply any handshake option
|
|
* changes.
|
|
*/
|
|
hs_mask_value = (mask_value & OSSL_QUIC_PERMITTED_OPTIONS_CONN);
|
|
hs_or_value = (or_value & OSSL_QUIC_PERMITTED_OPTIONS_CONN);
|
|
|
|
SSL_clear_options(ctx.qc->tls, hs_mask_value);
|
|
SSL_set_options(ctx.qc->tls, hs_or_value);
|
|
|
|
/* Update defaults for new streams. */
|
|
ctx.qc->default_ssl_options
|
|
= ((ctx.qc->default_ssl_options & ~mask_value) | or_value)
|
|
& OSSL_QUIC_PERMITTED_OPTIONS;
|
|
}
|
|
|
|
if (ctx.xso != NULL) {
|
|
ctx.xso->ssl_options
|
|
= ((ctx.xso->ssl_options & ~mask_value) | or_value)
|
|
& OSSL_QUIC_PERMITTED_OPTIONS_STREAM;
|
|
|
|
xso_update_options(ctx.xso);
|
|
}
|
|
|
|
ret = ctx.is_stream ? ctx.xso->ssl_options : ctx.qc->default_ssl_options;
|
|
|
|
quic_unlock(ctx.qc);
|
|
return ret;
|
|
}
|
|
|
|
uint64_t ossl_quic_set_options(SSL *ssl, uint64_t options)
|
|
{
|
|
return quic_mask_or_options(ssl, 0, options);
|
|
}
|
|
|
|
/* SSL_clear_options */
|
|
uint64_t ossl_quic_clear_options(SSL *ssl, uint64_t options)
|
|
{
|
|
return quic_mask_or_options(ssl, options, 0);
|
|
}
|
|
|
|
/* SSL_get_options */
|
|
uint64_t ossl_quic_get_options(const SSL *ssl)
|
|
{
|
|
return quic_mask_or_options((SSL *)ssl, 0, 0);
|
|
}
|
|
|
|
/*
|
|
* QUIC Front-End I/O API: Network BIO Configuration
|
|
* =================================================
|
|
*
|
|
* Handling the different BIOs is difficult:
|
|
*
|
|
* - It is more or less a requirement that we use non-blocking network I/O;
|
|
* we need to be able to have timeouts on recv() calls, and make best effort
|
|
* (non blocking) send() and recv() calls.
|
|
*
|
|
* The only sensible way to do this is to configure the socket into
|
|
* non-blocking mode. We could try to do select() before calling send() or
|
|
* recv() to get a guarantee that the call will not block, but this will
|
|
* probably run into issues with buggy OSes which generate spurious socket
|
|
* readiness events. In any case, relying on this to work reliably does not
|
|
* seem sane.
|
|
*
|
|
* Timeouts could be handled via setsockopt() socket timeout options, but
|
|
* this depends on OS support and adds another syscall to every network I/O
|
|
* operation. It also has obvious thread safety concerns if we want to move
|
|
* to concurrent use of a single socket at some later date.
|
|
*
|
|
* Some OSes support a MSG_DONTWAIT flag which allows a single I/O option to
|
|
* be made non-blocking. However some OSes (e.g. Windows) do not support
|
|
* this, so we cannot rely on this.
|
|
*
|
|
* As such, we need to configure any FD in non-blocking mode. This may
|
|
* confound users who pass a blocking socket to libssl. However, in practice
|
|
* it would be extremely strange for a user of QUIC to pass an FD to us,
|
|
* then also try and send receive traffic on the same socket(!). Thus the
|
|
* impact of this should be limited, and can be documented.
|
|
*
|
|
* - We support both blocking and non-blocking operation in terms of the API
|
|
* presented to the user. One prospect is to set the blocking mode based on
|
|
* whether the socket passed to us was already in blocking mode. However,
|
|
* Windows has no API for determining if a socket is in blocking mode (!),
|
|
* therefore this cannot be done portably. Currently therefore we expose an
|
|
* explicit API call to set this, and default to blocking mode.
|
|
*
|
|
* - We need to determine our initial destination UDP address. The "natural"
|
|
* way for a user to do this is to set the peer variable on a BIO_dgram.
|
|
* However, this has problems because BIO_dgram's peer variable is used for
|
|
* both transmission and reception. This means it can be constantly being
|
|
* changed to a malicious value (e.g. if some random unrelated entity on the
|
|
* network starts sending traffic to us) on every read call. This is not a
|
|
* direct issue because we use the 'stateless' BIO_sendmmsg and BIO_recvmmsg
|
|
* calls only, which do not use this variable. However, we do need to let
|
|
* the user specify the peer in a 'normal' manner. The compromise here is
|
|
* that we grab the current peer value set at the time the write BIO is set
|
|
* and do not read the value again.
|
|
*
|
|
* - We also need to support memory BIOs (e.g. BIO_dgram_pair) or custom BIOs.
|
|
* Currently we do this by only supporting non-blocking mode.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Determines what initial destination UDP address we should use, if possible.
|
|
* If this fails the client must set the destination address manually, or use a
|
|
* BIO which does not need a destination address.
|
|
*/
|
|
static int csm_analyse_init_peer_addr(BIO *net_wbio, BIO_ADDR *peer)
|
|
{
|
|
if (BIO_dgram_detect_peer_addr(net_wbio, peer) <= 0)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int qc_can_support_blocking_cached(QUIC_CONNECTION *qc)
|
|
{
|
|
QUIC_REACTOR *rtor = ossl_quic_channel_get_reactor(qc->ch);
|
|
|
|
return ossl_quic_reactor_can_poll_r(rtor)
|
|
&& ossl_quic_reactor_can_poll_w(rtor);
|
|
}
|
|
|
|
static void qc_update_can_support_blocking(QUIC_CONNECTION *qc)
|
|
{
|
|
ossl_quic_port_update_poll_descriptors(qc->port); /* best effort */
|
|
}
|
|
|
|
static void qc_update_blocking_mode(QUIC_CONNECTION *qc)
|
|
{
|
|
qc->blocking = qc->desires_blocking && qc_can_support_blocking_cached(qc);
|
|
}
|
|
|
|
void ossl_quic_conn_set0_net_rbio(SSL *s, BIO *net_rbio)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return;
|
|
|
|
if (ctx.qc->net_rbio == net_rbio)
|
|
return;
|
|
|
|
if (!ossl_quic_port_set_net_rbio(ctx.qc->port, net_rbio))
|
|
return;
|
|
|
|
BIO_free_all(ctx.qc->net_rbio);
|
|
ctx.qc->net_rbio = net_rbio;
|
|
|
|
if (net_rbio != NULL)
|
|
BIO_set_nbio(net_rbio, 1); /* best effort autoconfig */
|
|
|
|
/*
|
|
* Determine if the current pair of read/write BIOs now set allows blocking
|
|
* mode to be supported.
|
|
*/
|
|
qc_update_can_support_blocking(ctx.qc);
|
|
qc_update_blocking_mode(ctx.qc);
|
|
}
|
|
|
|
void ossl_quic_conn_set0_net_wbio(SSL *s, BIO *net_wbio)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return;
|
|
|
|
if (ctx.qc->net_wbio == net_wbio)
|
|
return;
|
|
|
|
if (!ossl_quic_port_set_net_wbio(ctx.qc->port, net_wbio))
|
|
return;
|
|
|
|
BIO_free_all(ctx.qc->net_wbio);
|
|
ctx.qc->net_wbio = net_wbio;
|
|
|
|
if (net_wbio != NULL)
|
|
BIO_set_nbio(net_wbio, 1); /* best effort autoconfig */
|
|
|
|
/*
|
|
* Determine if the current pair of read/write BIOs now set allows blocking
|
|
* mode to be supported.
|
|
*/
|
|
qc_update_can_support_blocking(ctx.qc);
|
|
qc_update_blocking_mode(ctx.qc);
|
|
}
|
|
|
|
BIO *ossl_quic_conn_get_net_rbio(const SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return NULL;
|
|
|
|
return ctx.qc->net_rbio;
|
|
}
|
|
|
|
BIO *ossl_quic_conn_get_net_wbio(const SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return NULL;
|
|
|
|
return ctx.qc->net_wbio;
|
|
}
|
|
|
|
int ossl_quic_conn_get_blocking_mode(const SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
if (ctx.is_stream)
|
|
return xso_blocking_mode(ctx.xso);
|
|
|
|
return qc_blocking_mode(ctx.qc);
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_conn_set_blocking_mode(SSL *s, int blocking)
|
|
{
|
|
int ret = 0;
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
/* Sanity check - can we support the request given the current network BIO? */
|
|
if (blocking) {
|
|
/*
|
|
* If called directly on a QCSO, update our information on network BIO
|
|
* capabilities.
|
|
*/
|
|
if (!ctx.is_stream)
|
|
qc_update_can_support_blocking(ctx.qc);
|
|
|
|
/* Cannot enable blocking mode if we do not have pollable FDs. */
|
|
if (!qc_can_support_blocking_cached(ctx.qc)) {
|
|
ret = QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_UNSUPPORTED, NULL);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (!ctx.is_stream)
|
|
/*
|
|
* If called directly on a QCSO, update default and connection-level
|
|
* blocking modes.
|
|
*/
|
|
ctx.qc->desires_blocking = (blocking != 0);
|
|
|
|
if (ctx.xso != NULL) {
|
|
/*
|
|
* If called on a QSSO or a QCSO with a default XSO, update the blocking
|
|
* mode.
|
|
*/
|
|
ctx.xso->desires_blocking = (blocking != 0);
|
|
ctx.xso->desires_blocking_set = 1;
|
|
}
|
|
|
|
ret = 1;
|
|
out:
|
|
qc_update_blocking_mode(ctx.qc);
|
|
quic_unlock(ctx.qc);
|
|
return ret;
|
|
}
|
|
|
|
int ossl_quic_conn_set_initial_peer_addr(SSL *s,
|
|
const BIO_ADDR *peer_addr)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
if (ctx.qc->started)
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
|
|
NULL);
|
|
|
|
if (peer_addr == NULL) {
|
|
BIO_ADDR_clear(&ctx.qc->init_peer_addr);
|
|
return 1;
|
|
}
|
|
|
|
ctx.qc->init_peer_addr = *peer_addr;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* QUIC Front-End I/O API: Asynchronous I/O Management
|
|
* ===================================================
|
|
*
|
|
* (BIO/)SSL_handle_events => ossl_quic_handle_events
|
|
* (BIO/)SSL_get_event_timeout => ossl_quic_get_event_timeout
|
|
* (BIO/)SSL_get_poll_fd => ossl_quic_get_poll_fd
|
|
*
|
|
*/
|
|
|
|
/* Returns 1 if the connection is being used in blocking mode. */
|
|
static int qc_blocking_mode(const QUIC_CONNECTION *qc)
|
|
{
|
|
return qc->blocking;
|
|
}
|
|
|
|
static int xso_blocking_mode(const QUIC_XSO *xso)
|
|
{
|
|
if (xso->desires_blocking_set)
|
|
return xso->desires_blocking && qc_can_support_blocking_cached(xso->conn);
|
|
else
|
|
/* Only ever set if we can support blocking. */
|
|
return xso->conn->blocking;
|
|
}
|
|
|
|
/* SSL_handle_events; performs QUIC I/O and timeout processing. */
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_handle_events(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(ctx.qc->ch), 0);
|
|
quic_unlock(ctx.qc);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* SSL_get_event_timeout. Get the time in milliseconds until the SSL object
|
|
* should next have events handled by the application by calling
|
|
* SSL_handle_events(). tv is set to 0 if the object should have events handled
|
|
* immediately. If no timeout is currently active, *is_infinite is set to 1 and
|
|
* the value of *tv is undefined.
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_get_event_timeout(SSL *s, struct timeval *tv, int *is_infinite)
|
|
{
|
|
QCTX ctx;
|
|
OSSL_TIME deadline = ossl_time_infinite();
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
deadline
|
|
= ossl_quic_reactor_get_tick_deadline(ossl_quic_channel_get_reactor(ctx.qc->ch));
|
|
|
|
if (ossl_time_is_infinite(deadline)) {
|
|
*is_infinite = 1;
|
|
|
|
/*
|
|
* Robustness against faulty applications that don't check *is_infinite;
|
|
* harmless long timeout.
|
|
*/
|
|
tv->tv_sec = 1000000;
|
|
tv->tv_usec = 0;
|
|
|
|
quic_unlock(ctx.qc);
|
|
return 1;
|
|
}
|
|
|
|
*tv = ossl_time_to_timeval(ossl_time_subtract(deadline, get_time(ctx.qc)));
|
|
*is_infinite = 0;
|
|
quic_unlock(ctx.qc);
|
|
return 1;
|
|
}
|
|
|
|
/* SSL_get_rpoll_descriptor */
|
|
int ossl_quic_get_rpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
if (desc == NULL || ctx.qc->net_rbio == NULL)
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_PASSED_INVALID_ARGUMENT,
|
|
NULL);
|
|
|
|
return BIO_get_rpoll_descriptor(ctx.qc->net_rbio, desc);
|
|
}
|
|
|
|
/* SSL_get_wpoll_descriptor */
|
|
int ossl_quic_get_wpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
if (desc == NULL || ctx.qc->net_wbio == NULL)
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_PASSED_INVALID_ARGUMENT,
|
|
NULL);
|
|
|
|
return BIO_get_wpoll_descriptor(ctx.qc->net_wbio, desc);
|
|
}
|
|
|
|
/* SSL_net_read_desired */
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_get_net_read_desired(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
int ret;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
ret = ossl_quic_reactor_net_read_desired(ossl_quic_channel_get_reactor(ctx.qc->ch));
|
|
quic_unlock(ctx.qc);
|
|
return ret;
|
|
}
|
|
|
|
/* SSL_net_write_desired */
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_get_net_write_desired(SSL *s)
|
|
{
|
|
int ret;
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
ret = ossl_quic_reactor_net_write_desired(ossl_quic_channel_get_reactor(ctx.qc->ch));
|
|
quic_unlock(ctx.qc);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* QUIC Front-End I/O API: Connection Lifecycle Operations
|
|
* =======================================================
|
|
*
|
|
* SSL_do_handshake => ossl_quic_do_handshake
|
|
* SSL_set_connect_state => ossl_quic_set_connect_state
|
|
* SSL_set_accept_state => ossl_quic_set_accept_state
|
|
* SSL_shutdown => ossl_quic_shutdown
|
|
* SSL_ctrl => ossl_quic_ctrl
|
|
* (BIO/)SSL_connect => ossl_quic_connect
|
|
* (BIO/)SSL_accept => ossl_quic_accept
|
|
*
|
|
*/
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static void qc_shutdown_flush_init(QUIC_CONNECTION *qc)
|
|
{
|
|
QUIC_STREAM_MAP *qsm;
|
|
|
|
if (qc->shutting_down)
|
|
return;
|
|
|
|
qsm = ossl_quic_channel_get_qsm(qc->ch);
|
|
|
|
ossl_quic_stream_map_begin_shutdown_flush(qsm);
|
|
qc->shutting_down = 1;
|
|
}
|
|
|
|
/* Returns 1 if all shutdown-flush streams have been done with. */
|
|
QUIC_NEEDS_LOCK
|
|
static int qc_shutdown_flush_finished(QUIC_CONNECTION *qc)
|
|
{
|
|
QUIC_STREAM_MAP *qsm = ossl_quic_channel_get_qsm(qc->ch);
|
|
|
|
return qc->shutting_down
|
|
&& ossl_quic_stream_map_is_shutdown_flush_finished(qsm);
|
|
}
|
|
|
|
/* SSL_shutdown */
|
|
static int quic_shutdown_wait(void *arg)
|
|
{
|
|
QUIC_CONNECTION *qc = arg;
|
|
|
|
return ossl_quic_channel_is_terminated(qc->ch);
|
|
}
|
|
|
|
/* Returns 1 if shutdown flush process has finished or is inapplicable. */
|
|
static int quic_shutdown_flush_wait(void *arg)
|
|
{
|
|
QUIC_CONNECTION *qc = arg;
|
|
|
|
return ossl_quic_channel_is_term_any(qc->ch)
|
|
|| qc_shutdown_flush_finished(qc);
|
|
}
|
|
|
|
static int quic_shutdown_peer_wait(void *arg)
|
|
{
|
|
QUIC_CONNECTION *qc = arg;
|
|
return ossl_quic_channel_is_term_any(qc->ch);
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_conn_shutdown(SSL *s, uint64_t flags,
|
|
const SSL_SHUTDOWN_EX_ARGS *args,
|
|
size_t args_len)
|
|
{
|
|
int ret;
|
|
QCTX ctx;
|
|
int stream_flush = ((flags & SSL_SHUTDOWN_FLAG_NO_STREAM_FLUSH) == 0);
|
|
int no_block = ((flags & SSL_SHUTDOWN_FLAG_NO_BLOCK) != 0);
|
|
int wait_peer = ((flags & SSL_SHUTDOWN_FLAG_WAIT_PEER) != 0);
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return -1;
|
|
|
|
if (ctx.is_stream) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(&ctx, SSL_R_CONN_USE_ONLY, NULL);
|
|
return -1;
|
|
}
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
if (ossl_quic_channel_is_terminated(ctx.qc->ch)) {
|
|
quic_unlock(ctx.qc);
|
|
return 1;
|
|
}
|
|
|
|
/* Phase 1: Stream Flushing */
|
|
if (!wait_peer && stream_flush) {
|
|
qc_shutdown_flush_init(ctx.qc);
|
|
|
|
if (!qc_shutdown_flush_finished(ctx.qc)) {
|
|
if (!no_block && qc_blocking_mode(ctx.qc)) {
|
|
ret = block_until_pred(ctx.qc, quic_shutdown_flush_wait, ctx.qc, 0);
|
|
if (ret < 1) {
|
|
ret = 0;
|
|
goto err;
|
|
}
|
|
} else {
|
|
qctx_maybe_autotick(&ctx);
|
|
}
|
|
}
|
|
|
|
if (!qc_shutdown_flush_finished(ctx.qc)) {
|
|
quic_unlock(ctx.qc);
|
|
return 0; /* ongoing */
|
|
}
|
|
}
|
|
|
|
/* Phase 2: Connection Closure */
|
|
if (wait_peer && !ossl_quic_channel_is_term_any(ctx.qc->ch)) {
|
|
if (!no_block && qc_blocking_mode(ctx.qc)) {
|
|
ret = block_until_pred(ctx.qc, quic_shutdown_peer_wait, ctx.qc, 0);
|
|
if (ret < 1) {
|
|
ret = 0;
|
|
goto err;
|
|
}
|
|
} else {
|
|
qctx_maybe_autotick(&ctx);
|
|
}
|
|
|
|
if (!ossl_quic_channel_is_term_any(ctx.qc->ch)) {
|
|
ret = 0; /* peer hasn't closed yet - still not done */
|
|
goto err;
|
|
}
|
|
|
|
/*
|
|
* We are at least terminating - go through the normal process of
|
|
* waiting until we are in the TERMINATED state.
|
|
*/
|
|
}
|
|
|
|
/* Block mutation ops regardless of if we did stream flush. */
|
|
ctx.qc->shutting_down = 1;
|
|
|
|
/*
|
|
* This call is a no-op if we are already terminating, so it doesn't
|
|
* affect the wait_peer case.
|
|
*/
|
|
ossl_quic_channel_local_close(ctx.qc->ch,
|
|
args != NULL ? args->quic_error_code : 0,
|
|
args != NULL ? args->quic_reason : NULL);
|
|
|
|
SSL_set_shutdown(ctx.qc->tls, SSL_SENT_SHUTDOWN);
|
|
|
|
if (ossl_quic_channel_is_terminated(ctx.qc->ch)) {
|
|
quic_unlock(ctx.qc);
|
|
return 1;
|
|
}
|
|
|
|
/* Phase 3: Terminating Wait Time */
|
|
if (!no_block && qc_blocking_mode(ctx.qc)
|
|
&& (flags & SSL_SHUTDOWN_FLAG_RAPID) == 0) {
|
|
ret = block_until_pred(ctx.qc, quic_shutdown_wait, ctx.qc, 0);
|
|
if (ret < 1) {
|
|
ret = 0;
|
|
goto err;
|
|
}
|
|
} else {
|
|
qctx_maybe_autotick(&ctx);
|
|
}
|
|
|
|
ret = ossl_quic_channel_is_terminated(ctx.qc->ch);
|
|
err:
|
|
quic_unlock(ctx.qc);
|
|
return ret;
|
|
}
|
|
|
|
/* SSL_ctrl */
|
|
long ossl_quic_ctrl(SSL *s, int cmd, long larg, void *parg)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
switch (cmd) {
|
|
case SSL_CTRL_MODE:
|
|
/* If called on a QCSO, update the default mode. */
|
|
if (!ctx.is_stream)
|
|
ctx.qc->default_ssl_mode |= (uint32_t)larg;
|
|
|
|
/*
|
|
* If we were called on a QSSO or have a default stream, we also update
|
|
* that.
|
|
*/
|
|
if (ctx.xso != NULL) {
|
|
/* Cannot enable EPW while AON write in progress. */
|
|
if (ctx.xso->aon_write_in_progress)
|
|
larg &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
|
|
|
|
ctx.xso->ssl_mode |= (uint32_t)larg;
|
|
return ctx.xso->ssl_mode;
|
|
}
|
|
|
|
return ctx.qc->default_ssl_mode;
|
|
case SSL_CTRL_CLEAR_MODE:
|
|
if (!ctx.is_stream)
|
|
ctx.qc->default_ssl_mode &= ~(uint32_t)larg;
|
|
|
|
if (ctx.xso != NULL) {
|
|
ctx.xso->ssl_mode &= ~(uint32_t)larg;
|
|
return ctx.xso->ssl_mode;
|
|
}
|
|
|
|
return ctx.qc->default_ssl_mode;
|
|
|
|
case SSL_CTRL_SET_MSG_CALLBACK_ARG:
|
|
ossl_quic_channel_set_msg_callback_arg(ctx.qc->ch, parg);
|
|
/* This ctrl also needs to be passed to the internal SSL object */
|
|
return SSL_ctrl(ctx.qc->tls, cmd, larg, parg);
|
|
|
|
case DTLS_CTRL_GET_TIMEOUT: /* DTLSv1_get_timeout */
|
|
{
|
|
int is_infinite;
|
|
|
|
if (!ossl_quic_get_event_timeout(s, parg, &is_infinite))
|
|
return 0;
|
|
|
|
return !is_infinite;
|
|
}
|
|
case DTLS_CTRL_HANDLE_TIMEOUT: /* DTLSv1_handle_timeout */
|
|
/* For legacy compatibility with DTLS calls. */
|
|
return ossl_quic_handle_events(s) == 1 ? 1 : -1;
|
|
|
|
/* Mask ctrls we shouldn't support for QUIC. */
|
|
case SSL_CTRL_GET_READ_AHEAD:
|
|
case SSL_CTRL_SET_READ_AHEAD:
|
|
case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
|
|
case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
|
|
case SSL_CTRL_SET_MAX_PIPELINES:
|
|
return 0;
|
|
|
|
default:
|
|
/*
|
|
* Probably a TLS related ctrl. Send back to the frontend SSL_ctrl
|
|
* implementation. Either SSL_ctrl will handle it itself by direct
|
|
* access into handshake layer state, or failing that, it will be passed
|
|
* to the handshake layer via the SSL_METHOD vtable. If the ctrl is not
|
|
* supported by anything, the handshake layer's ctrl method will finally
|
|
* return 0.
|
|
*/
|
|
return ossl_ctrl_internal(&ctx.qc->ssl, cmd, larg, parg, /*no_quic=*/1);
|
|
}
|
|
}
|
|
|
|
/* SSL_set_connect_state */
|
|
void ossl_quic_set_connect_state(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return;
|
|
|
|
/* Cannot be changed after handshake started */
|
|
if (ctx.qc->started || ctx.is_stream)
|
|
return;
|
|
|
|
ctx.qc->as_server_state = 0;
|
|
}
|
|
|
|
/* SSL_set_accept_state */
|
|
void ossl_quic_set_accept_state(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return;
|
|
|
|
/* Cannot be changed after handshake started */
|
|
if (ctx.qc->started || ctx.is_stream)
|
|
return;
|
|
|
|
ctx.qc->as_server_state = 1;
|
|
}
|
|
|
|
/* SSL_do_handshake */
|
|
struct quic_handshake_wait_args {
|
|
QUIC_CONNECTION *qc;
|
|
};
|
|
|
|
static int tls_wants_non_io_retry(QUIC_CONNECTION *qc)
|
|
{
|
|
int want = SSL_want(qc->tls);
|
|
|
|
if (want == SSL_X509_LOOKUP
|
|
|| want == SSL_CLIENT_HELLO_CB
|
|
|| want == SSL_RETRY_VERIFY)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int quic_handshake_wait(void *arg)
|
|
{
|
|
struct quic_handshake_wait_args *args = arg;
|
|
|
|
if (!quic_mutation_allowed(args->qc, /*req_active=*/1))
|
|
return -1;
|
|
|
|
if (ossl_quic_channel_is_handshake_complete(args->qc->ch))
|
|
return 1;
|
|
|
|
if (tls_wants_non_io_retry(args->qc))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int configure_channel(QUIC_CONNECTION *qc)
|
|
{
|
|
assert(qc->ch != NULL);
|
|
|
|
if (!ossl_quic_port_set_net_rbio(qc->port, qc->net_rbio)
|
|
|| !ossl_quic_port_set_net_wbio(qc->port, qc->net_wbio)
|
|
|| !ossl_quic_channel_set_peer_addr(qc->ch, &qc->init_peer_addr))
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int create_channel(QUIC_CONNECTION *qc)
|
|
{
|
|
QUIC_ENGINE_ARGS engine_args = {0};
|
|
QUIC_PORT_ARGS port_args = {0};
|
|
|
|
engine_args.libctx = qc->ssl.ctx->libctx;
|
|
engine_args.propq = qc->ssl.ctx->propq;
|
|
engine_args.mutex = qc->mutex;
|
|
engine_args.now_cb = get_time_cb;
|
|
engine_args.now_cb_arg = qc;
|
|
qc->engine = ossl_quic_engine_new(&engine_args);
|
|
if (qc->engine == NULL) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_INTERNAL_ERROR, NULL);
|
|
return 0;
|
|
}
|
|
|
|
port_args.channel_ctx = qc->ssl.ctx;
|
|
qc->port = ossl_quic_engine_create_port(qc->engine, &port_args);
|
|
if (qc->port == NULL) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_INTERNAL_ERROR, NULL);
|
|
ossl_quic_engine_free(qc->engine);
|
|
return 0;
|
|
}
|
|
|
|
qc->ch = ossl_quic_port_create_outgoing(qc->port, qc->tls);
|
|
if (qc->ch == NULL) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_INTERNAL_ERROR, NULL);
|
|
ossl_quic_port_free(qc->port);
|
|
ossl_quic_engine_free(qc->engine);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Configures a channel with the information we have accumulated via calls made
|
|
* to us from the application prior to starting a handshake attempt.
|
|
*/
|
|
QUIC_NEEDS_LOCK
|
|
static int ensure_channel_started(QCTX *ctx)
|
|
{
|
|
QUIC_CONNECTION *qc = ctx->qc;
|
|
|
|
if (!qc->started) {
|
|
if (!configure_channel(qc)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR,
|
|
"failed to configure channel");
|
|
return 0;
|
|
}
|
|
|
|
if (!ossl_quic_channel_start(qc->ch)) {
|
|
ossl_quic_channel_restore_err_state(qc->ch);
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR,
|
|
"failed to start channel");
|
|
return 0;
|
|
}
|
|
|
|
#if !defined(OPENSSL_NO_QUIC_THREAD_ASSIST)
|
|
if (qc->is_thread_assisted)
|
|
if (!ossl_quic_thread_assist_init_start(&qc->thread_assist, qc->ch,
|
|
qc->override_now_cb,
|
|
qc->override_now_cb_arg)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR,
|
|
"failed to start assist thread");
|
|
return 0;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
qc->started = 1;
|
|
return 1;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_do_handshake(QCTX *ctx)
|
|
{
|
|
int ret;
|
|
QUIC_CONNECTION *qc = ctx->qc;
|
|
|
|
if (ossl_quic_channel_is_handshake_complete(qc->ch))
|
|
/* Handshake already completed. */
|
|
return 1;
|
|
|
|
if (!quic_mutation_allowed(qc, /*req_active=*/0))
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
|
|
if (qc->as_server != qc->as_server_state) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_PASSED_INVALID_ARGUMENT, NULL);
|
|
return -1; /* Non-protocol error */
|
|
}
|
|
|
|
if (qc->net_rbio == NULL || qc->net_wbio == NULL) {
|
|
/* Need read and write BIOs. */
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_BIO_NOT_SET, NULL);
|
|
return -1; /* Non-protocol error */
|
|
}
|
|
|
|
/*
|
|
* We need to determine our addressing mode. There are basically two
|
|
* ways we can use L4 addresses:
|
|
*
|
|
* - Addressed mode, in which our BIO_sendmmsg calls have destination
|
|
* addresses attached to them which we expect the underlying network BIO
|
|
* to handle;
|
|
*
|
|
* - Unaddressed mode, in which the BIO provided to us on the
|
|
* network side neither provides us with L4 addresses nor is capable of
|
|
* honouring ones we provide. We don't know where the QUIC traffic we
|
|
* send ends up exactly and trust the application to know what it is
|
|
* doing.
|
|
*
|
|
* Addressed mode is preferred because it enables support for connection
|
|
* migration, multipath, etc. in the future. Addressed mode is automatically
|
|
* enabled if we are using e.g. BIO_s_datagram, with or without
|
|
* BIO_s_connect.
|
|
*
|
|
* If we are passed a BIO_s_dgram_pair (or some custom BIO) we may have to
|
|
* use unaddressed mode unless that BIO supports capability flags indicating
|
|
* it can provide and honour L4 addresses.
|
|
*
|
|
* Our strategy for determining address mode is simple: we probe the
|
|
* underlying network BIOs for their capabilities. If the network BIOs
|
|
* support what we need, we use addressed mode. Otherwise, we use
|
|
* unaddressed mode.
|
|
*
|
|
* If addressed mode is chosen, we require an initial peer address to be
|
|
* set. If this is not set, we fail. If unaddressed mode is used, we do not
|
|
* require this, as such an address is superfluous, though it can be set if
|
|
* desired.
|
|
*/
|
|
if (!qc->started && !qc->addressing_probe_done) {
|
|
long rcaps = BIO_dgram_get_effective_caps(qc->net_rbio);
|
|
long wcaps = BIO_dgram_get_effective_caps(qc->net_wbio);
|
|
|
|
qc->addressed_mode_r = ((rcaps & BIO_DGRAM_CAP_PROVIDES_SRC_ADDR) != 0);
|
|
qc->addressed_mode_w = ((wcaps & BIO_DGRAM_CAP_HANDLES_DST_ADDR) != 0);
|
|
qc->addressing_probe_done = 1;
|
|
}
|
|
|
|
if (!qc->started && qc->addressed_mode_w
|
|
&& BIO_ADDR_family(&qc->init_peer_addr) == AF_UNSPEC) {
|
|
/*
|
|
* We are trying to connect and are using addressed mode, which means we
|
|
* need an initial peer address; if we do not have a peer address yet,
|
|
* we should try to autodetect one.
|
|
*
|
|
* We do this as late as possible because some BIOs (e.g. BIO_s_connect)
|
|
* may not be able to provide us with a peer address until they have
|
|
* finished their own processing. They may not be able to perform this
|
|
* processing until an application has finished configuring that BIO
|
|
* (e.g. with setter calls), which might happen after SSL_set_bio is
|
|
* called.
|
|
*/
|
|
if (!csm_analyse_init_peer_addr(qc->net_wbio, &qc->init_peer_addr))
|
|
/* best effort */
|
|
BIO_ADDR_clear(&qc->init_peer_addr);
|
|
else
|
|
ossl_quic_channel_set_peer_addr(qc->ch, &qc->init_peer_addr);
|
|
}
|
|
|
|
if (!qc->started
|
|
&& qc->addressed_mode_w
|
|
&& BIO_ADDR_family(&qc->init_peer_addr) == AF_UNSPEC) {
|
|
/*
|
|
* If we still don't have a peer address in addressed mode, we can't do
|
|
* anything.
|
|
*/
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_REMOTE_PEER_ADDRESS_NOT_SET, NULL);
|
|
return -1; /* Non-protocol error */
|
|
}
|
|
|
|
/*
|
|
* Start connection process. Note we may come here multiple times in
|
|
* non-blocking mode, which is fine.
|
|
*/
|
|
if (!ensure_channel_started(ctx)) /* raises on failure */
|
|
return -1; /* Non-protocol error */
|
|
|
|
if (ossl_quic_channel_is_handshake_complete(qc->ch))
|
|
/* The handshake is now done. */
|
|
return 1;
|
|
|
|
if (!qc_blocking_mode(qc)) {
|
|
/* Try to advance the reactor. */
|
|
qctx_maybe_autotick(ctx);
|
|
|
|
if (ossl_quic_channel_is_handshake_complete(qc->ch))
|
|
/* The handshake is now done. */
|
|
return 1;
|
|
|
|
if (ossl_quic_channel_is_term_any(qc->ch)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
return 0;
|
|
} else if (qc->desires_blocking) {
|
|
/*
|
|
* As a special case when doing a handshake when blocking mode is
|
|
* desired yet not available, see if the network BIOs have become
|
|
* poll descriptor-enabled. This supports BIOs such as BIO_s_connect
|
|
* which do late creation of socket FDs and therefore cannot expose
|
|
* a poll descriptor until after a network BIO is set on the QCSO.
|
|
*/
|
|
assert(!qc->blocking);
|
|
qc_update_can_support_blocking(qc);
|
|
qc_update_blocking_mode(qc);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We are either in blocking mode or just entered it due to the code above.
|
|
*/
|
|
if (qc_blocking_mode(qc)) {
|
|
/* In blocking mode, wait for the handshake to complete. */
|
|
struct quic_handshake_wait_args args;
|
|
|
|
args.qc = qc;
|
|
|
|
ret = block_until_pred(qc, quic_handshake_wait, &args, 0);
|
|
if (!quic_mutation_allowed(qc, /*req_active=*/1)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
return 0; /* Shutdown before completion */
|
|
} else if (ret <= 0) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
return -1; /* Non-protocol error */
|
|
}
|
|
|
|
if (tls_wants_non_io_retry(qc)) {
|
|
QUIC_RAISE_NORMAL_ERROR(ctx, SSL_get_error(qc->tls, 0));
|
|
return -1;
|
|
}
|
|
|
|
assert(ossl_quic_channel_is_handshake_complete(qc->ch));
|
|
return 1;
|
|
}
|
|
|
|
if (tls_wants_non_io_retry(qc)) {
|
|
QUIC_RAISE_NORMAL_ERROR(ctx, SSL_get_error(qc->tls, 0));
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Otherwise, indicate that the handshake isn't done yet.
|
|
* We can only get here in non-blocking mode.
|
|
*/
|
|
QUIC_RAISE_NORMAL_ERROR(ctx, SSL_ERROR_WANT_READ);
|
|
return -1; /* Non-protocol error */
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_do_handshake(SSL *s)
|
|
{
|
|
int ret;
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock_for_io(&ctx);
|
|
|
|
ret = quic_do_handshake(&ctx);
|
|
quic_unlock(ctx.qc);
|
|
return ret;
|
|
}
|
|
|
|
/* SSL_connect */
|
|
int ossl_quic_connect(SSL *s)
|
|
{
|
|
/* Ensure we are in connect state (no-op if non-idle). */
|
|
ossl_quic_set_connect_state(s);
|
|
|
|
/* Begin or continue the handshake */
|
|
return ossl_quic_do_handshake(s);
|
|
}
|
|
|
|
/* SSL_accept */
|
|
int ossl_quic_accept(SSL *s)
|
|
{
|
|
/* Ensure we are in accept state (no-op if non-idle). */
|
|
ossl_quic_set_accept_state(s);
|
|
|
|
/* Begin or continue the handshake */
|
|
return ossl_quic_do_handshake(s);
|
|
}
|
|
|
|
/*
|
|
* QUIC Front-End I/O API: Stream Lifecycle Operations
|
|
* ===================================================
|
|
*
|
|
* SSL_stream_new => ossl_quic_conn_stream_new
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Try to create the default XSO if it doesn't already exist. Returns 1 if the
|
|
* default XSO was created. Returns 0 if it was not (e.g. because it already
|
|
* exists). Note that this is NOT an error condition.
|
|
*/
|
|
QUIC_NEEDS_LOCK
|
|
static int qc_try_create_default_xso_for_write(QCTX *ctx)
|
|
{
|
|
uint64_t flags = 0;
|
|
QUIC_CONNECTION *qc = ctx->qc;
|
|
|
|
if (qc->default_xso_created
|
|
|| qc->default_stream_mode == SSL_DEFAULT_STREAM_MODE_NONE)
|
|
/*
|
|
* We only do this once. If the user detaches a previously created
|
|
* default XSO we don't auto-create another one.
|
|
*/
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_NO_STREAM, NULL);
|
|
|
|
/* Create a locally-initiated stream. */
|
|
if (qc->default_stream_mode == SSL_DEFAULT_STREAM_MODE_AUTO_UNI)
|
|
flags |= SSL_STREAM_FLAG_UNI;
|
|
|
|
qc_set_default_xso(qc, (QUIC_XSO *)quic_conn_stream_new(ctx, flags,
|
|
/*needs_lock=*/0),
|
|
/*touch=*/0);
|
|
if (qc->default_xso == NULL)
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
|
|
qc_touch_default_xso(qc);
|
|
return 1;
|
|
}
|
|
|
|
struct quic_wait_for_stream_args {
|
|
QUIC_CONNECTION *qc;
|
|
QUIC_STREAM *qs;
|
|
QCTX *ctx;
|
|
uint64_t expect_id;
|
|
};
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_wait_for_stream(void *arg)
|
|
{
|
|
struct quic_wait_for_stream_args *args = arg;
|
|
|
|
if (!quic_mutation_allowed(args->qc, /*req_active=*/1)) {
|
|
/* If connection is torn down due to an error while blocking, stop. */
|
|
QUIC_RAISE_NON_NORMAL_ERROR(args->ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
return -1;
|
|
}
|
|
|
|
args->qs = ossl_quic_stream_map_get_by_id(ossl_quic_channel_get_qsm(args->qc->ch),
|
|
args->expect_id | QUIC_STREAM_DIR_BIDI);
|
|
if (args->qs == NULL)
|
|
args->qs = ossl_quic_stream_map_get_by_id(ossl_quic_channel_get_qsm(args->qc->ch),
|
|
args->expect_id | QUIC_STREAM_DIR_UNI);
|
|
|
|
if (args->qs != NULL)
|
|
return 1; /* stream now exists */
|
|
|
|
return 0; /* did not get a stream, keep trying */
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int qc_wait_for_default_xso_for_read(QCTX *ctx, int peek)
|
|
{
|
|
/* Called on a QCSO and we don't currently have a default stream. */
|
|
uint64_t expect_id;
|
|
QUIC_CONNECTION *qc = ctx->qc;
|
|
QUIC_STREAM *qs;
|
|
int res;
|
|
struct quic_wait_for_stream_args wargs;
|
|
OSSL_RTT_INFO rtt_info;
|
|
|
|
/*
|
|
* If default stream functionality is disabled or we already detached
|
|
* one, don't make another default stream and just fail.
|
|
*/
|
|
if (qc->default_xso_created
|
|
|| qc->default_stream_mode == SSL_DEFAULT_STREAM_MODE_NONE)
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_NO_STREAM, NULL);
|
|
|
|
/*
|
|
* The peer may have opened a stream since we last ticked. So tick and
|
|
* see if the stream with ordinal 0 (remote, bidi/uni based on stream
|
|
* mode) exists yet. QUIC stream IDs must be allocated in order, so the
|
|
* first stream created by a peer must have an ordinal of 0.
|
|
*/
|
|
expect_id = qc->as_server
|
|
? QUIC_STREAM_INITIATOR_CLIENT
|
|
: QUIC_STREAM_INITIATOR_SERVER;
|
|
|
|
qs = ossl_quic_stream_map_get_by_id(ossl_quic_channel_get_qsm(qc->ch),
|
|
expect_id | QUIC_STREAM_DIR_BIDI);
|
|
if (qs == NULL)
|
|
qs = ossl_quic_stream_map_get_by_id(ossl_quic_channel_get_qsm(qc->ch),
|
|
expect_id | QUIC_STREAM_DIR_UNI);
|
|
|
|
if (qs == NULL) {
|
|
qctx_maybe_autotick(ctx);
|
|
|
|
qs = ossl_quic_stream_map_get_by_id(ossl_quic_channel_get_qsm(qc->ch),
|
|
expect_id);
|
|
}
|
|
|
|
if (qs == NULL) {
|
|
if (peek)
|
|
return 0;
|
|
|
|
if (!qc_blocking_mode(qc))
|
|
/* Non-blocking mode, so just bail immediately. */
|
|
return QUIC_RAISE_NORMAL_ERROR(ctx, SSL_ERROR_WANT_READ);
|
|
|
|
/* Block until we have a stream. */
|
|
wargs.qc = qc;
|
|
wargs.qs = NULL;
|
|
wargs.ctx = ctx;
|
|
wargs.expect_id = expect_id;
|
|
|
|
res = block_until_pred(qc, quic_wait_for_stream, &wargs, 0);
|
|
if (res == 0)
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
else if (res < 0 || wargs.qs == NULL)
|
|
/* quic_wait_for_stream raised error here */
|
|
return 0;
|
|
|
|
qs = wargs.qs;
|
|
}
|
|
|
|
/*
|
|
* We now have qs != NULL. Remove it from the incoming stream queue so that
|
|
* it isn't also returned by any future SSL_accept_stream calls.
|
|
*/
|
|
ossl_statm_get_rtt_info(ossl_quic_channel_get_statm(qc->ch), &rtt_info);
|
|
ossl_quic_stream_map_remove_from_accept_queue(ossl_quic_channel_get_qsm(qc->ch),
|
|
qs, rtt_info.smoothed_rtt);
|
|
|
|
/*
|
|
* Now make qs the default stream, creating the necessary XSO.
|
|
*/
|
|
qc_set_default_xso(qc, create_xso_from_stream(qc, qs), /*touch=*/0);
|
|
if (qc->default_xso == NULL)
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
|
|
qc_touch_default_xso(qc); /* inhibits default XSO */
|
|
return 1;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static QUIC_XSO *create_xso_from_stream(QUIC_CONNECTION *qc, QUIC_STREAM *qs)
|
|
{
|
|
QUIC_XSO *xso = NULL;
|
|
|
|
if ((xso = OPENSSL_zalloc(sizeof(*xso))) == NULL) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_CRYPTO_LIB, NULL);
|
|
goto err;
|
|
}
|
|
|
|
if (!ossl_ssl_init(&xso->ssl, qc->ssl.ctx, qc->ssl.method, SSL_TYPE_QUIC_XSO)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_INTERNAL_ERROR, NULL);
|
|
goto err;
|
|
}
|
|
|
|
/* XSO refs QC */
|
|
if (!SSL_up_ref(&qc->ssl)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_SSL_LIB, NULL);
|
|
goto err;
|
|
}
|
|
|
|
xso->conn = qc;
|
|
xso->ssl_mode = qc->default_ssl_mode;
|
|
xso->ssl_options
|
|
= qc->default_ssl_options & OSSL_QUIC_PERMITTED_OPTIONS_STREAM;
|
|
xso->last_error = SSL_ERROR_NONE;
|
|
|
|
xso->stream = qs;
|
|
|
|
++qc->num_xso;
|
|
xso_update_options(xso);
|
|
return xso;
|
|
|
|
err:
|
|
OPENSSL_free(xso);
|
|
return NULL;
|
|
}
|
|
|
|
struct quic_new_stream_wait_args {
|
|
QUIC_CONNECTION *qc;
|
|
int is_uni;
|
|
};
|
|
|
|
static int quic_new_stream_wait(void *arg)
|
|
{
|
|
struct quic_new_stream_wait_args *args = arg;
|
|
QUIC_CONNECTION *qc = args->qc;
|
|
|
|
if (!quic_mutation_allowed(qc, /*req_active=*/1))
|
|
return -1;
|
|
|
|
if (ossl_quic_channel_is_new_local_stream_admissible(qc->ch, args->is_uni))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* locking depends on need_lock */
|
|
static SSL *quic_conn_stream_new(QCTX *ctx, uint64_t flags, int need_lock)
|
|
{
|
|
int ret;
|
|
QUIC_CONNECTION *qc = ctx->qc;
|
|
QUIC_XSO *xso = NULL;
|
|
QUIC_STREAM *qs = NULL;
|
|
int is_uni = ((flags & SSL_STREAM_FLAG_UNI) != 0);
|
|
int no_blocking = ((flags & SSL_STREAM_FLAG_NO_BLOCK) != 0);
|
|
int advance = ((flags & SSL_STREAM_FLAG_ADVANCE) != 0);
|
|
|
|
if (need_lock)
|
|
quic_lock(qc);
|
|
|
|
if (!quic_mutation_allowed(qc, /*req_active=*/0)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
goto err;
|
|
}
|
|
|
|
if (!advance
|
|
&& !ossl_quic_channel_is_new_local_stream_admissible(qc->ch, is_uni)) {
|
|
struct quic_new_stream_wait_args args;
|
|
|
|
/*
|
|
* Stream count flow control currently doesn't permit this stream to be
|
|
* opened.
|
|
*/
|
|
if (no_blocking || !qc_blocking_mode(qc)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_STREAM_COUNT_LIMITED, NULL);
|
|
goto err;
|
|
}
|
|
|
|
args.qc = qc;
|
|
args.is_uni = is_uni;
|
|
|
|
/* Blocking mode - wait until we can get a stream. */
|
|
ret = block_until_pred(ctx->qc, quic_new_stream_wait, &args, 0);
|
|
if (!quic_mutation_allowed(qc, /*req_active=*/1)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
goto err; /* Shutdown before completion */
|
|
} else if (ret <= 0) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
goto err; /* Non-protocol error */
|
|
}
|
|
}
|
|
|
|
qs = ossl_quic_channel_new_stream_local(qc->ch, is_uni);
|
|
if (qs == NULL) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
goto err;
|
|
}
|
|
|
|
xso = create_xso_from_stream(qc, qs);
|
|
if (xso == NULL)
|
|
goto err;
|
|
|
|
qc_touch_default_xso(qc); /* inhibits default XSO */
|
|
if (need_lock)
|
|
quic_unlock(qc);
|
|
|
|
return &xso->ssl;
|
|
|
|
err:
|
|
OPENSSL_free(xso);
|
|
ossl_quic_stream_map_release(ossl_quic_channel_get_qsm(qc->ch), qs);
|
|
if (need_lock)
|
|
quic_unlock(qc);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
SSL *ossl_quic_conn_stream_new(SSL *s, uint64_t flags)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic_conn_only(s, &ctx))
|
|
return NULL;
|
|
|
|
return quic_conn_stream_new(&ctx, flags, /*need_lock=*/1);
|
|
}
|
|
|
|
/*
|
|
* QUIC Front-End I/O API: Steady-State Operations
|
|
* ===============================================
|
|
*
|
|
* Here we dispatch calls to the steady-state front-end I/O API functions; that
|
|
* is, the functions used during the established phase of a QUIC connection
|
|
* (e.g. SSL_read, SSL_write).
|
|
*
|
|
* Each function must handle both blocking and non-blocking modes. As discussed
|
|
* above, all QUIC I/O is implemented using non-blocking mode internally.
|
|
*
|
|
* SSL_get_error => partially implemented by ossl_quic_get_error
|
|
* SSL_want => ossl_quic_want
|
|
* (BIO/)SSL_read => ossl_quic_read
|
|
* (BIO/)SSL_write => ossl_quic_write
|
|
* SSL_pending => ossl_quic_pending
|
|
* SSL_stream_conclude => ossl_quic_conn_stream_conclude
|
|
* SSL_key_update => ossl_quic_key_update
|
|
*/
|
|
|
|
/* SSL_get_error */
|
|
int ossl_quic_get_error(const SSL *s, int i)
|
|
{
|
|
QCTX ctx;
|
|
int net_error, last_error;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
net_error = ossl_quic_channel_net_error(ctx.qc->ch);
|
|
last_error = ctx.is_stream ? ctx.xso->last_error : ctx.qc->last_error;
|
|
quic_unlock(ctx.qc);
|
|
|
|
if (net_error)
|
|
return SSL_ERROR_SYSCALL;
|
|
|
|
return last_error;
|
|
}
|
|
|
|
/* Converts a code returned by SSL_get_error to a code returned by SSL_want. */
|
|
static int error_to_want(int error)
|
|
{
|
|
switch (error) {
|
|
case SSL_ERROR_WANT_CONNECT: /* never used - UDP is connectionless */
|
|
case SSL_ERROR_WANT_ACCEPT: /* never used - UDP is connectionless */
|
|
case SSL_ERROR_ZERO_RETURN:
|
|
default:
|
|
return SSL_NOTHING;
|
|
|
|
case SSL_ERROR_WANT_READ:
|
|
return SSL_READING;
|
|
|
|
case SSL_ERROR_WANT_WRITE:
|
|
return SSL_WRITING;
|
|
|
|
case SSL_ERROR_WANT_RETRY_VERIFY:
|
|
return SSL_RETRY_VERIFY;
|
|
|
|
case SSL_ERROR_WANT_CLIENT_HELLO_CB:
|
|
return SSL_CLIENT_HELLO_CB;
|
|
|
|
case SSL_ERROR_WANT_X509_LOOKUP:
|
|
return SSL_X509_LOOKUP;
|
|
}
|
|
}
|
|
|
|
/* SSL_want */
|
|
int ossl_quic_want(const SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
int w;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return SSL_NOTHING;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
w = error_to_want(ctx.is_stream ? ctx.xso->last_error : ctx.qc->last_error);
|
|
|
|
quic_unlock(ctx.qc);
|
|
return w;
|
|
}
|
|
|
|
/*
|
|
* SSL_write
|
|
* ---------
|
|
*
|
|
* The set of functions below provide the implementation of the public SSL_write
|
|
* function. We must handle:
|
|
*
|
|
* - both blocking and non-blocking operation at the application level,
|
|
* depending on how we are configured;
|
|
*
|
|
* - SSL_MODE_ENABLE_PARTIAL_WRITE being on or off;
|
|
*
|
|
* - SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER.
|
|
*
|
|
*/
|
|
QUIC_NEEDS_LOCK
|
|
static void quic_post_write(QUIC_XSO *xso, int did_append,
|
|
int did_append_all, uint64_t flags,
|
|
int do_tick)
|
|
{
|
|
/*
|
|
* We have appended at least one byte to the stream.
|
|
* Potentially mark stream as active, depending on FC.
|
|
*/
|
|
if (did_append)
|
|
ossl_quic_stream_map_update_state(ossl_quic_channel_get_qsm(xso->conn->ch),
|
|
xso->stream);
|
|
|
|
if (did_append_all && (flags & SSL_WRITE_FLAG_CONCLUDE) != 0)
|
|
ossl_quic_sstream_fin(xso->stream->sstream);
|
|
|
|
/*
|
|
* Try and send.
|
|
*
|
|
* TODO(QUIC FUTURE): It is probably inefficient to try and do this
|
|
* immediately, plus we should eventually consider Nagle's algorithm.
|
|
*/
|
|
if (do_tick)
|
|
ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(xso->conn->ch), 0);
|
|
}
|
|
|
|
struct quic_write_again_args {
|
|
QUIC_XSO *xso;
|
|
const unsigned char *buf;
|
|
size_t len;
|
|
size_t total_written;
|
|
int err;
|
|
uint64_t flags;
|
|
};
|
|
|
|
/*
|
|
* Absolute maximum write buffer size, enforced to prevent a rogue peer from
|
|
* deliberately inducing DoS. This has been chosen based on the optimal buffer
|
|
* size for an RTT of 500ms and a bandwidth of 100 Mb/s.
|
|
*/
|
|
#define MAX_WRITE_BUF_SIZE (6 * 1024 * 1024)
|
|
|
|
/*
|
|
* Ensure spare buffer space available (up until a limit, at least).
|
|
*/
|
|
QUIC_NEEDS_LOCK
|
|
static int sstream_ensure_spare(QUIC_SSTREAM *sstream, uint64_t spare)
|
|
{
|
|
size_t cur_sz = ossl_quic_sstream_get_buffer_size(sstream);
|
|
size_t avail = ossl_quic_sstream_get_buffer_avail(sstream);
|
|
size_t spare_ = (spare > SIZE_MAX) ? SIZE_MAX : (size_t)spare;
|
|
size_t new_sz, growth;
|
|
|
|
if (spare_ <= avail || cur_sz == MAX_WRITE_BUF_SIZE)
|
|
return 1;
|
|
|
|
growth = spare_ - avail;
|
|
if (cur_sz + growth > MAX_WRITE_BUF_SIZE)
|
|
new_sz = MAX_WRITE_BUF_SIZE;
|
|
else
|
|
new_sz = cur_sz + growth;
|
|
|
|
return ossl_quic_sstream_set_buffer_size(sstream, new_sz);
|
|
}
|
|
|
|
/*
|
|
* Append to a QUIC_STREAM's QUIC_SSTREAM, ensuring buffer space is expanded
|
|
* as needed according to flow control.
|
|
*/
|
|
QUIC_NEEDS_LOCK
|
|
static int xso_sstream_append(QUIC_XSO *xso, const unsigned char *buf,
|
|
size_t len, size_t *actual_written)
|
|
{
|
|
QUIC_SSTREAM *sstream = xso->stream->sstream;
|
|
uint64_t cur = ossl_quic_sstream_get_cur_size(sstream);
|
|
uint64_t cwm = ossl_quic_txfc_get_cwm(&xso->stream->txfc);
|
|
uint64_t permitted = (cwm >= cur ? cwm - cur : 0);
|
|
|
|
if (len > permitted)
|
|
len = (size_t)permitted;
|
|
|
|
if (!sstream_ensure_spare(sstream, len))
|
|
return 0;
|
|
|
|
return ossl_quic_sstream_append(sstream, buf, len, actual_written);
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_write_again(void *arg)
|
|
{
|
|
struct quic_write_again_args *args = arg;
|
|
size_t actual_written = 0;
|
|
|
|
if (!quic_mutation_allowed(args->xso->conn, /*req_active=*/1))
|
|
/* If connection is torn down due to an error while blocking, stop. */
|
|
return -2;
|
|
|
|
if (!quic_validate_for_write(args->xso, &args->err))
|
|
/*
|
|
* Stream may have become invalid for write due to connection events
|
|
* while we blocked.
|
|
*/
|
|
return -2;
|
|
|
|
args->err = ERR_R_INTERNAL_ERROR;
|
|
if (!xso_sstream_append(args->xso, args->buf, args->len, &actual_written))
|
|
return -2;
|
|
|
|
quic_post_write(args->xso, actual_written > 0,
|
|
args->len == actual_written, args->flags, 0);
|
|
|
|
args->buf += actual_written;
|
|
args->len -= actual_written;
|
|
args->total_written += actual_written;
|
|
|
|
if (args->len == 0)
|
|
/* Written everything, done. */
|
|
return 1;
|
|
|
|
/* Not written everything yet, keep trying. */
|
|
return 0;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_write_blocking(QCTX *ctx, const void *buf, size_t len,
|
|
uint64_t flags, size_t *written)
|
|
{
|
|
int res;
|
|
QUIC_XSO *xso = ctx->xso;
|
|
struct quic_write_again_args args;
|
|
size_t actual_written = 0;
|
|
|
|
/* First make a best effort to append as much of the data as possible. */
|
|
if (!xso_sstream_append(xso, buf, len, &actual_written)) {
|
|
/* Stream already finished or allocation error. */
|
|
*written = 0;
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
}
|
|
|
|
quic_post_write(xso, actual_written > 0, actual_written == len, flags, 1);
|
|
|
|
if (actual_written == len) {
|
|
/* Managed to append everything on the first try. */
|
|
*written = actual_written;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* We did not manage to append all of the data immediately, so the stream
|
|
* buffer has probably filled up. This means we need to block until some of
|
|
* it is freed up.
|
|
*/
|
|
args.xso = xso;
|
|
args.buf = (const unsigned char *)buf + actual_written;
|
|
args.len = len - actual_written;
|
|
args.total_written = 0;
|
|
args.err = ERR_R_INTERNAL_ERROR;
|
|
args.flags = flags;
|
|
|
|
res = block_until_pred(xso->conn, quic_write_again, &args, 0);
|
|
if (res <= 0) {
|
|
if (!quic_mutation_allowed(xso->conn, /*req_active=*/1))
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
else
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, args.err, NULL);
|
|
}
|
|
|
|
*written = args.total_written;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Functions to manage All-or-Nothing (AON) (that is, non-ENABLE_PARTIAL_WRITE)
|
|
* write semantics.
|
|
*/
|
|
static void aon_write_begin(QUIC_XSO *xso, const unsigned char *buf,
|
|
size_t buf_len, size_t already_sent)
|
|
{
|
|
assert(!xso->aon_write_in_progress);
|
|
|
|
xso->aon_write_in_progress = 1;
|
|
xso->aon_buf_base = buf;
|
|
xso->aon_buf_pos = already_sent;
|
|
xso->aon_buf_len = buf_len;
|
|
}
|
|
|
|
static void aon_write_finish(QUIC_XSO *xso)
|
|
{
|
|
xso->aon_write_in_progress = 0;
|
|
xso->aon_buf_base = NULL;
|
|
xso->aon_buf_pos = 0;
|
|
xso->aon_buf_len = 0;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_write_nonblocking_aon(QCTX *ctx, const void *buf,
|
|
size_t len, uint64_t flags,
|
|
size_t *written)
|
|
{
|
|
QUIC_XSO *xso = ctx->xso;
|
|
const void *actual_buf;
|
|
size_t actual_len, actual_written = 0;
|
|
int accept_moving_buffer
|
|
= ((xso->ssl_mode & SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER) != 0);
|
|
|
|
if (xso->aon_write_in_progress) {
|
|
/*
|
|
* We are in the middle of an AON write (i.e., a previous write did not
|
|
* manage to append all data to the SSTREAM and we have Enable Partial
|
|
* Write (EPW) mode disabled.)
|
|
*/
|
|
if ((!accept_moving_buffer && xso->aon_buf_base != buf)
|
|
|| len != xso->aon_buf_len)
|
|
/*
|
|
* Pointer must not have changed if we are not in accept moving
|
|
* buffer mode. Length must never change.
|
|
*/
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_BAD_WRITE_RETRY, NULL);
|
|
|
|
actual_buf = (unsigned char *)buf + xso->aon_buf_pos;
|
|
actual_len = len - xso->aon_buf_pos;
|
|
assert(actual_len > 0);
|
|
} else {
|
|
actual_buf = buf;
|
|
actual_len = len;
|
|
}
|
|
|
|
/* First make a best effort to append as much of the data as possible. */
|
|
if (!xso_sstream_append(xso, actual_buf, actual_len, &actual_written)) {
|
|
/* Stream already finished or allocation error. */
|
|
*written = 0;
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
}
|
|
|
|
quic_post_write(xso, actual_written > 0, actual_written == actual_len,
|
|
flags, qctx_should_autotick(ctx));
|
|
|
|
if (actual_written == actual_len) {
|
|
/* We have sent everything. */
|
|
if (xso->aon_write_in_progress) {
|
|
/*
|
|
* We have sent everything, and we were in the middle of an AON
|
|
* write. The output write length is the total length of the AON
|
|
* buffer, not however many bytes we managed to write to the stream
|
|
* in this call.
|
|
*/
|
|
*written = xso->aon_buf_len;
|
|
aon_write_finish(xso);
|
|
} else {
|
|
*written = actual_written;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
if (xso->aon_write_in_progress) {
|
|
/*
|
|
* AON write is in progress but we have not written everything yet. We
|
|
* may have managed to send zero bytes, or some number of bytes less
|
|
* than the total remaining which need to be appended during this
|
|
* AON operation.
|
|
*/
|
|
xso->aon_buf_pos += actual_written;
|
|
assert(xso->aon_buf_pos < xso->aon_buf_len);
|
|
return QUIC_RAISE_NORMAL_ERROR(ctx, SSL_ERROR_WANT_WRITE);
|
|
}
|
|
|
|
/*
|
|
* Not in an existing AON operation but partial write is not enabled, so we
|
|
* need to begin a new AON operation. However we needn't bother if we didn't
|
|
* actually append anything.
|
|
*/
|
|
if (actual_written > 0)
|
|
aon_write_begin(xso, buf, len, actual_written);
|
|
|
|
/*
|
|
* AON - We do not publicly admit to having appended anything until AON
|
|
* completes.
|
|
*/
|
|
*written = 0;
|
|
return QUIC_RAISE_NORMAL_ERROR(ctx, SSL_ERROR_WANT_WRITE);
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_write_nonblocking_epw(QCTX *ctx, const void *buf, size_t len,
|
|
uint64_t flags, size_t *written)
|
|
{
|
|
QUIC_XSO *xso = ctx->xso;
|
|
|
|
/* Simple best effort operation. */
|
|
if (!xso_sstream_append(xso, buf, len, written)) {
|
|
/* Stream already finished or allocation error. */
|
|
*written = 0;
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
}
|
|
|
|
quic_post_write(xso, *written > 0, *written == len, flags,
|
|
qctx_should_autotick(ctx));
|
|
|
|
if (*written == 0)
|
|
/* SSL_write_ex returns 0 if it didn't read anything. */
|
|
return QUIC_RAISE_NORMAL_ERROR(ctx, SSL_ERROR_WANT_READ);
|
|
|
|
return 1;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_validate_for_write(QUIC_XSO *xso, int *err)
|
|
{
|
|
QUIC_STREAM_MAP *qsm;
|
|
|
|
if (xso == NULL || xso->stream == NULL) {
|
|
*err = ERR_R_INTERNAL_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
switch (xso->stream->send_state) {
|
|
default:
|
|
case QUIC_SSTREAM_STATE_NONE:
|
|
*err = SSL_R_STREAM_RECV_ONLY;
|
|
return 0;
|
|
|
|
case QUIC_SSTREAM_STATE_READY:
|
|
qsm = ossl_quic_channel_get_qsm(xso->conn->ch);
|
|
|
|
if (!ossl_quic_stream_map_ensure_send_part_id(qsm, xso->stream)) {
|
|
*err = ERR_R_INTERNAL_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
/* FALLTHROUGH */
|
|
case QUIC_SSTREAM_STATE_SEND:
|
|
case QUIC_SSTREAM_STATE_DATA_SENT:
|
|
case QUIC_SSTREAM_STATE_DATA_RECVD:
|
|
if (ossl_quic_sstream_get_final_size(xso->stream->sstream, NULL)) {
|
|
*err = SSL_R_STREAM_FINISHED;
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
|
|
case QUIC_SSTREAM_STATE_RESET_SENT:
|
|
case QUIC_SSTREAM_STATE_RESET_RECVD:
|
|
*err = SSL_R_STREAM_RESET;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_write_flags(SSL *s, const void *buf, size_t len,
|
|
uint64_t flags, size_t *written)
|
|
{
|
|
int ret;
|
|
QCTX ctx;
|
|
int partial_write, err;
|
|
|
|
*written = 0;
|
|
|
|
if (len == 0) {
|
|
/* Do not autocreate default XSO for zero-length writes. */
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock_for_io(&ctx);
|
|
} else {
|
|
if (!expect_quic_with_stream_lock(s, /*remote_init=*/0, /*io=*/1, &ctx))
|
|
return 0;
|
|
}
|
|
|
|
partial_write = ((ctx.xso != NULL)
|
|
? ((ctx.xso->ssl_mode & SSL_MODE_ENABLE_PARTIAL_WRITE) != 0) : 0);
|
|
|
|
if ((flags & ~SSL_WRITE_FLAG_CONCLUDE) != 0) {
|
|
ret = QUIC_RAISE_NON_NORMAL_ERROR(&ctx, SSL_R_UNSUPPORTED_WRITE_FLAG, NULL);
|
|
goto out;
|
|
}
|
|
|
|
if (!quic_mutation_allowed(ctx.qc, /*req_active=*/0)) {
|
|
ret = QUIC_RAISE_NON_NORMAL_ERROR(&ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* If we haven't finished the handshake, try to advance it.
|
|
* We don't accept writes until the handshake is completed.
|
|
*/
|
|
if (quic_do_handshake(&ctx) < 1) {
|
|
ret = 0;
|
|
goto out;
|
|
}
|
|
|
|
/* Ensure correct stream state, stream send part not concluded, etc. */
|
|
if (len > 0 && !quic_validate_for_write(ctx.xso, &err)) {
|
|
ret = QUIC_RAISE_NON_NORMAL_ERROR(&ctx, err, NULL);
|
|
goto out;
|
|
}
|
|
|
|
if (len == 0) {
|
|
if ((flags & SSL_WRITE_FLAG_CONCLUDE) != 0)
|
|
quic_post_write(ctx.xso, 0, 1, flags,
|
|
qctx_should_autotick(&ctx));
|
|
|
|
ret = 1;
|
|
goto out;
|
|
}
|
|
|
|
if (xso_blocking_mode(ctx.xso))
|
|
ret = quic_write_blocking(&ctx, buf, len, flags, written);
|
|
else if (partial_write)
|
|
ret = quic_write_nonblocking_epw(&ctx, buf, len, flags, written);
|
|
else
|
|
ret = quic_write_nonblocking_aon(&ctx, buf, len, flags, written);
|
|
|
|
out:
|
|
quic_unlock(ctx.qc);
|
|
return ret;
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_write(SSL *s, const void *buf, size_t len, size_t *written)
|
|
{
|
|
return ossl_quic_write_flags(s, buf, len, 0, written);
|
|
}
|
|
|
|
/*
|
|
* SSL_read
|
|
* --------
|
|
*/
|
|
struct quic_read_again_args {
|
|
QCTX *ctx;
|
|
QUIC_STREAM *stream;
|
|
void *buf;
|
|
size_t len;
|
|
size_t *bytes_read;
|
|
int peek;
|
|
};
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_validate_for_read(QUIC_XSO *xso, int *err, int *eos)
|
|
{
|
|
QUIC_STREAM_MAP *qsm;
|
|
|
|
*eos = 0;
|
|
|
|
if (xso == NULL || xso->stream == NULL) {
|
|
*err = ERR_R_INTERNAL_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
switch (xso->stream->recv_state) {
|
|
default:
|
|
case QUIC_RSTREAM_STATE_NONE:
|
|
*err = SSL_R_STREAM_SEND_ONLY;
|
|
return 0;
|
|
|
|
case QUIC_RSTREAM_STATE_RECV:
|
|
case QUIC_RSTREAM_STATE_SIZE_KNOWN:
|
|
case QUIC_RSTREAM_STATE_DATA_RECVD:
|
|
return 1;
|
|
|
|
case QUIC_RSTREAM_STATE_DATA_READ:
|
|
*eos = 1;
|
|
return 0;
|
|
|
|
case QUIC_RSTREAM_STATE_RESET_RECVD:
|
|
qsm = ossl_quic_channel_get_qsm(xso->conn->ch);
|
|
ossl_quic_stream_map_notify_app_read_reset_recv_part(qsm, xso->stream);
|
|
|
|
/* FALLTHROUGH */
|
|
case QUIC_RSTREAM_STATE_RESET_READ:
|
|
*err = SSL_R_STREAM_RESET;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_read_actual(QCTX *ctx,
|
|
QUIC_STREAM *stream,
|
|
void *buf, size_t buf_len,
|
|
size_t *bytes_read,
|
|
int peek)
|
|
{
|
|
int is_fin = 0, err, eos;
|
|
QUIC_CONNECTION *qc = ctx->qc;
|
|
|
|
if (!quic_validate_for_read(ctx->xso, &err, &eos)) {
|
|
if (eos) {
|
|
ctx->xso->retired_fin = 1;
|
|
return QUIC_RAISE_NORMAL_ERROR(ctx, SSL_ERROR_ZERO_RETURN);
|
|
} else {
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, err, NULL);
|
|
}
|
|
}
|
|
|
|
if (peek) {
|
|
if (!ossl_quic_rstream_peek(stream->rstream, buf, buf_len,
|
|
bytes_read, &is_fin))
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
|
|
} else {
|
|
if (!ossl_quic_rstream_read(stream->rstream, buf, buf_len,
|
|
bytes_read, &is_fin))
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
}
|
|
|
|
if (!peek) {
|
|
if (*bytes_read > 0) {
|
|
/*
|
|
* We have read at least one byte from the stream. Inform stream-level
|
|
* RXFC of the retirement of controlled bytes. Update the active stream
|
|
* status (the RXFC may now want to emit a frame granting more credit to
|
|
* the peer).
|
|
*/
|
|
OSSL_RTT_INFO rtt_info;
|
|
|
|
ossl_statm_get_rtt_info(ossl_quic_channel_get_statm(qc->ch), &rtt_info);
|
|
|
|
if (!ossl_quic_rxfc_on_retire(&stream->rxfc, *bytes_read,
|
|
rtt_info.smoothed_rtt))
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
}
|
|
|
|
if (is_fin && !peek) {
|
|
QUIC_STREAM_MAP *qsm = ossl_quic_channel_get_qsm(ctx->qc->ch);
|
|
|
|
ossl_quic_stream_map_notify_totally_read(qsm, ctx->xso->stream);
|
|
}
|
|
|
|
if (*bytes_read > 0)
|
|
ossl_quic_stream_map_update_state(ossl_quic_channel_get_qsm(qc->ch),
|
|
stream);
|
|
}
|
|
|
|
if (*bytes_read == 0 && is_fin) {
|
|
ctx->xso->retired_fin = 1;
|
|
return QUIC_RAISE_NORMAL_ERROR(ctx, SSL_ERROR_ZERO_RETURN);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_read_again(void *arg)
|
|
{
|
|
struct quic_read_again_args *args = arg;
|
|
|
|
if (!quic_mutation_allowed(args->ctx->qc, /*req_active=*/1)) {
|
|
/* If connection is torn down due to an error while blocking, stop. */
|
|
QUIC_RAISE_NON_NORMAL_ERROR(args->ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
return -1;
|
|
}
|
|
|
|
if (!quic_read_actual(args->ctx, args->stream,
|
|
args->buf, args->len, args->bytes_read,
|
|
args->peek))
|
|
return -1;
|
|
|
|
if (*args->bytes_read > 0)
|
|
/* got at least one byte, the SSL_read op can finish now */
|
|
return 1;
|
|
|
|
return 0; /* did not read anything, keep trying */
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
static int quic_read(SSL *s, void *buf, size_t len, size_t *bytes_read, int peek)
|
|
{
|
|
int ret, res;
|
|
QCTX ctx;
|
|
struct quic_read_again_args args;
|
|
|
|
*bytes_read = 0;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock_for_io(&ctx);
|
|
|
|
if (!quic_mutation_allowed(ctx.qc, /*req_active=*/0)) {
|
|
ret = QUIC_RAISE_NON_NORMAL_ERROR(&ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
goto out;
|
|
}
|
|
|
|
/* If we haven't finished the handshake, try to advance it. */
|
|
if (quic_do_handshake(&ctx) < 1) {
|
|
ret = 0; /* ossl_quic_do_handshake raised error here */
|
|
goto out;
|
|
}
|
|
|
|
if (ctx.xso == NULL) {
|
|
/*
|
|
* Called on a QCSO and we don't currently have a default stream.
|
|
*
|
|
* Wait until we get a stream initiated by the peer (blocking mode) or
|
|
* fail if we don't have one yet (non-blocking mode).
|
|
*/
|
|
if (!qc_wait_for_default_xso_for_read(&ctx, /*peek=*/0)) {
|
|
ret = 0; /* error already raised here */
|
|
goto out;
|
|
}
|
|
|
|
ctx.xso = ctx.qc->default_xso;
|
|
}
|
|
|
|
if (!quic_read_actual(&ctx, ctx.xso->stream, buf, len, bytes_read, peek)) {
|
|
ret = 0; /* quic_read_actual raised error here */
|
|
goto out;
|
|
}
|
|
|
|
if (*bytes_read > 0) {
|
|
/*
|
|
* Even though we succeeded, tick the reactor here to ensure we are
|
|
* handling other aspects of the QUIC connection.
|
|
*/
|
|
qctx_maybe_autotick(&ctx);
|
|
ret = 1;
|
|
} else if (xso_blocking_mode(ctx.xso)) {
|
|
/*
|
|
* We were not able to read anything immediately, so our stream
|
|
* buffer is empty. This means we need to block until we get
|
|
* at least one byte.
|
|
*/
|
|
args.ctx = &ctx;
|
|
args.stream = ctx.xso->stream;
|
|
args.buf = buf;
|
|
args.len = len;
|
|
args.bytes_read = bytes_read;
|
|
args.peek = peek;
|
|
|
|
res = block_until_pred(ctx.qc, quic_read_again, &args, 0);
|
|
if (res == 0) {
|
|
ret = QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
goto out;
|
|
} else if (res < 0) {
|
|
ret = 0; /* quic_read_again raised error here */
|
|
goto out;
|
|
}
|
|
|
|
ret = 1;
|
|
} else {
|
|
/*
|
|
* We did not get any bytes and are not in blocking mode.
|
|
* Tick to see if this delivers any more.
|
|
*/
|
|
qctx_maybe_autotick(&ctx);
|
|
|
|
/* Try the read again. */
|
|
if (!quic_read_actual(&ctx, ctx.xso->stream, buf, len, bytes_read, peek)) {
|
|
ret = 0; /* quic_read_actual raised error here */
|
|
goto out;
|
|
}
|
|
|
|
if (*bytes_read > 0)
|
|
ret = 1; /* Succeeded this time. */
|
|
else
|
|
ret = QUIC_RAISE_NORMAL_ERROR(&ctx, SSL_ERROR_WANT_READ);
|
|
}
|
|
|
|
out:
|
|
quic_unlock(ctx.qc);
|
|
return ret;
|
|
}
|
|
|
|
int ossl_quic_read(SSL *s, void *buf, size_t len, size_t *bytes_read)
|
|
{
|
|
return quic_read(s, buf, len, bytes_read, 0);
|
|
}
|
|
|
|
int ossl_quic_peek(SSL *s, void *buf, size_t len, size_t *bytes_read)
|
|
{
|
|
return quic_read(s, buf, len, bytes_read, 1);
|
|
}
|
|
|
|
/*
|
|
* SSL_pending
|
|
* -----------
|
|
*/
|
|
|
|
QUIC_TAKES_LOCK
|
|
static size_t ossl_quic_pending_int(const SSL *s, int check_channel)
|
|
{
|
|
QCTX ctx;
|
|
size_t avail = 0;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
if (ctx.xso == NULL) {
|
|
/* No XSO yet, but there might be a default XSO eligible to be created. */
|
|
if (qc_wait_for_default_xso_for_read(&ctx, /*peek=*/1)) {
|
|
ctx.xso = ctx.qc->default_xso;
|
|
} else {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(&ctx, SSL_R_NO_STREAM, NULL);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (ctx.xso->stream == NULL) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
goto out;
|
|
}
|
|
|
|
if (check_channel)
|
|
avail = ossl_quic_stream_recv_pending(ctx.xso->stream,
|
|
/*include_fin=*/1)
|
|
|| ossl_quic_channel_has_pending(ctx.qc->ch)
|
|
|| ossl_quic_channel_is_term_any(ctx.qc->ch);
|
|
else
|
|
avail = ossl_quic_stream_recv_pending(ctx.xso->stream,
|
|
/*include_fin=*/0);
|
|
|
|
out:
|
|
quic_unlock(ctx.qc);
|
|
return avail;
|
|
}
|
|
|
|
size_t ossl_quic_pending(const SSL *s)
|
|
{
|
|
return ossl_quic_pending_int(s, /*check_channel=*/0);
|
|
}
|
|
|
|
int ossl_quic_has_pending(const SSL *s)
|
|
{
|
|
/* Do we have app-side pending data or pending URXEs or RXEs? */
|
|
return ossl_quic_pending_int(s, /*check_channel=*/1) > 0;
|
|
}
|
|
|
|
/*
|
|
* SSL_stream_conclude
|
|
* -------------------
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_conn_stream_conclude(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
QUIC_STREAM *qs;
|
|
int err;
|
|
|
|
if (!expect_quic_with_stream_lock(s, /*remote_init=*/0, /*io=*/0, &ctx))
|
|
return 0;
|
|
|
|
qs = ctx.xso->stream;
|
|
|
|
if (!quic_mutation_allowed(ctx.qc, /*req_active=*/1)) {
|
|
quic_unlock(ctx.qc);
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
}
|
|
|
|
if (!quic_validate_for_write(ctx.xso, &err)) {
|
|
quic_unlock(ctx.qc);
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, err, NULL);
|
|
}
|
|
|
|
if (ossl_quic_sstream_get_final_size(qs->sstream, NULL)) {
|
|
quic_unlock(ctx.qc);
|
|
return 1;
|
|
}
|
|
|
|
ossl_quic_sstream_fin(qs->sstream);
|
|
quic_post_write(ctx.xso, 1, 0, 0, qctx_should_autotick(&ctx));
|
|
quic_unlock(ctx.qc);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* SSL_inject_net_dgram
|
|
* --------------------
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
int SSL_inject_net_dgram(SSL *s, const unsigned char *buf,
|
|
size_t buf_len,
|
|
const BIO_ADDR *peer,
|
|
const BIO_ADDR *local)
|
|
{
|
|
int ret;
|
|
QCTX ctx;
|
|
QUIC_DEMUX *demux;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
demux = ossl_quic_channel_get0_demux(ctx.qc->ch);
|
|
ret = ossl_quic_demux_inject(demux, buf, buf_len, peer, local);
|
|
|
|
quic_unlock(ctx.qc);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* SSL_get0_connection
|
|
* -------------------
|
|
*/
|
|
SSL *ossl_quic_get0_connection(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return NULL;
|
|
|
|
return &ctx.qc->ssl;
|
|
}
|
|
|
|
/*
|
|
* SSL_get_stream_type
|
|
* -------------------
|
|
*/
|
|
int ossl_quic_get_stream_type(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic(s, &ctx))
|
|
return SSL_STREAM_TYPE_BIDI;
|
|
|
|
if (ctx.xso == NULL) {
|
|
/*
|
|
* If deferred XSO creation has yet to occur, proceed according to the
|
|
* default stream mode. If AUTO_BIDI or AUTO_UNI is set, we cannot know
|
|
* what kind of stream will be created yet, so return BIDI on the basis
|
|
* that at this time, the client still has the option of calling
|
|
* SSL_read() or SSL_write() first.
|
|
*/
|
|
if (ctx.qc->default_xso_created
|
|
|| ctx.qc->default_stream_mode == SSL_DEFAULT_STREAM_MODE_NONE)
|
|
return SSL_STREAM_TYPE_NONE;
|
|
else
|
|
return SSL_STREAM_TYPE_BIDI;
|
|
}
|
|
|
|
if (ossl_quic_stream_is_bidi(ctx.xso->stream))
|
|
return SSL_STREAM_TYPE_BIDI;
|
|
|
|
if (ossl_quic_stream_is_server_init(ctx.xso->stream) != ctx.qc->as_server)
|
|
return SSL_STREAM_TYPE_READ;
|
|
else
|
|
return SSL_STREAM_TYPE_WRITE;
|
|
}
|
|
|
|
/*
|
|
* SSL_get_stream_id
|
|
* -----------------
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
uint64_t ossl_quic_get_stream_id(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
uint64_t id;
|
|
|
|
if (!expect_quic_with_stream_lock(s, /*remote_init=*/-1, /*io=*/0, &ctx))
|
|
return UINT64_MAX;
|
|
|
|
id = ctx.xso->stream->id;
|
|
quic_unlock(ctx.qc);
|
|
|
|
return id;
|
|
}
|
|
|
|
/*
|
|
* SSL_is_stream_local
|
|
* -------------------
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_is_stream_local(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
int is_local;
|
|
|
|
if (!expect_quic_with_stream_lock(s, /*remote_init=*/-1, /*io=*/0, &ctx))
|
|
return -1;
|
|
|
|
is_local = ossl_quic_stream_is_local_init(ctx.xso->stream);
|
|
quic_unlock(ctx.qc);
|
|
|
|
return is_local;
|
|
}
|
|
|
|
/*
|
|
* SSL_set_default_stream_mode
|
|
* ---------------------------
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_set_default_stream_mode(SSL *s, uint32_t mode)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic_conn_only(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
if (ctx.qc->default_xso_created) {
|
|
quic_unlock(ctx.qc);
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
|
|
"too late to change default stream mode");
|
|
}
|
|
|
|
switch (mode) {
|
|
case SSL_DEFAULT_STREAM_MODE_NONE:
|
|
case SSL_DEFAULT_STREAM_MODE_AUTO_BIDI:
|
|
case SSL_DEFAULT_STREAM_MODE_AUTO_UNI:
|
|
ctx.qc->default_stream_mode = mode;
|
|
break;
|
|
default:
|
|
quic_unlock(ctx.qc);
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_PASSED_INVALID_ARGUMENT,
|
|
"bad default stream type");
|
|
}
|
|
|
|
quic_unlock(ctx.qc);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* SSL_detach_stream
|
|
* -----------------
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
SSL *ossl_quic_detach_stream(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
QUIC_XSO *xso = NULL;
|
|
|
|
if (!expect_quic_conn_only(s, &ctx))
|
|
return NULL;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
/* Calling this function inhibits default XSO autocreation. */
|
|
/* QC ref to any default XSO is transferred to us and to caller. */
|
|
qc_set_default_xso_keep_ref(ctx.qc, NULL, /*touch=*/1, &xso);
|
|
|
|
quic_unlock(ctx.qc);
|
|
|
|
return xso != NULL ? &xso->ssl : NULL;
|
|
}
|
|
|
|
/*
|
|
* SSL_attach_stream
|
|
* -----------------
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_attach_stream(SSL *conn, SSL *stream)
|
|
{
|
|
QCTX ctx;
|
|
QUIC_XSO *xso;
|
|
int nref;
|
|
|
|
if (!expect_quic_conn_only(conn, &ctx))
|
|
return 0;
|
|
|
|
if (stream == NULL || stream->type != SSL_TYPE_QUIC_XSO)
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_PASSED_NULL_PARAMETER,
|
|
"stream to attach must be a valid QUIC stream");
|
|
|
|
xso = (QUIC_XSO *)stream;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
if (ctx.qc->default_xso != NULL) {
|
|
quic_unlock(ctx.qc);
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
|
|
"connection already has a default stream");
|
|
}
|
|
|
|
/*
|
|
* It is a caller error for the XSO being attached as a default XSO to have
|
|
* more than one ref.
|
|
*/
|
|
if (!CRYPTO_GET_REF(&xso->ssl.references, &nref)) {
|
|
quic_unlock(ctx.qc);
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_INTERNAL_ERROR,
|
|
"ref");
|
|
}
|
|
|
|
if (nref != 1) {
|
|
quic_unlock(ctx.qc);
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_PASSED_INVALID_ARGUMENT,
|
|
"stream being attached must have "
|
|
"only 1 reference");
|
|
}
|
|
|
|
/* Caller's reference to the XSO is transferred to us. */
|
|
/* Calling this function inhibits default XSO autocreation. */
|
|
qc_set_default_xso(ctx.qc, xso, /*touch=*/1);
|
|
|
|
quic_unlock(ctx.qc);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* SSL_set_incoming_stream_policy
|
|
* ------------------------------
|
|
*/
|
|
QUIC_NEEDS_LOCK
|
|
static int qc_get_effective_incoming_stream_policy(QUIC_CONNECTION *qc)
|
|
{
|
|
switch (qc->incoming_stream_policy) {
|
|
case SSL_INCOMING_STREAM_POLICY_AUTO:
|
|
if ((qc->default_xso == NULL && !qc->default_xso_created)
|
|
|| qc->default_stream_mode == SSL_DEFAULT_STREAM_MODE_NONE)
|
|
return SSL_INCOMING_STREAM_POLICY_ACCEPT;
|
|
else
|
|
return SSL_INCOMING_STREAM_POLICY_REJECT;
|
|
|
|
default:
|
|
return qc->incoming_stream_policy;
|
|
}
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static void qc_update_reject_policy(QUIC_CONNECTION *qc)
|
|
{
|
|
int policy = qc_get_effective_incoming_stream_policy(qc);
|
|
int enable_reject = (policy == SSL_INCOMING_STREAM_POLICY_REJECT);
|
|
|
|
ossl_quic_channel_set_incoming_stream_auto_reject(qc->ch,
|
|
enable_reject,
|
|
qc->incoming_stream_aec);
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_set_incoming_stream_policy(SSL *s, int policy,
|
|
uint64_t aec)
|
|
{
|
|
int ret = 1;
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic_conn_only(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
switch (policy) {
|
|
case SSL_INCOMING_STREAM_POLICY_AUTO:
|
|
case SSL_INCOMING_STREAM_POLICY_ACCEPT:
|
|
case SSL_INCOMING_STREAM_POLICY_REJECT:
|
|
ctx.qc->incoming_stream_policy = policy;
|
|
ctx.qc->incoming_stream_aec = aec;
|
|
break;
|
|
|
|
default:
|
|
QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_PASSED_INVALID_ARGUMENT, NULL);
|
|
ret = 0;
|
|
break;
|
|
}
|
|
|
|
qc_update_reject_policy(ctx.qc);
|
|
quic_unlock(ctx.qc);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* SSL_get_value, SSL_set_value
|
|
* ----------------------------
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
static int qc_getset_idle_timeout(QCTX *ctx, uint32_t class_,
|
|
uint64_t *p_value_out, uint64_t *p_value_in)
|
|
{
|
|
int ret = 0;
|
|
uint64_t value_out = 0, value_in;
|
|
|
|
quic_lock(ctx->qc);
|
|
|
|
switch (class_) {
|
|
case SSL_VALUE_CLASS_FEATURE_REQUEST:
|
|
value_out = ossl_quic_channel_get_max_idle_timeout_request(ctx->qc->ch);
|
|
|
|
if (p_value_in != NULL) {
|
|
value_in = *p_value_in;
|
|
if (value_in > OSSL_QUIC_VLINT_MAX) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_PASSED_INVALID_ARGUMENT,
|
|
NULL);
|
|
goto err;
|
|
}
|
|
|
|
if (ossl_quic_channel_have_generated_transport_params(ctx->qc->ch)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_FEATURE_NOT_RENEGOTIABLE,
|
|
NULL);
|
|
goto err;
|
|
}
|
|
|
|
ossl_quic_channel_set_max_idle_timeout_request(ctx->qc->ch, value_in);
|
|
}
|
|
break;
|
|
|
|
case SSL_VALUE_CLASS_FEATURE_PEER_REQUEST:
|
|
case SSL_VALUE_CLASS_FEATURE_NEGOTIATED:
|
|
if (p_value_in != NULL) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_UNSUPPORTED_CONFIG_VALUE_OP,
|
|
NULL);
|
|
goto err;
|
|
}
|
|
|
|
if (!ossl_quic_channel_is_handshake_complete(ctx->qc->ch)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_FEATURE_NEGOTIATION_NOT_COMPLETE,
|
|
NULL);
|
|
goto err;
|
|
}
|
|
|
|
value_out = (class_ == SSL_VALUE_CLASS_FEATURE_NEGOTIATED)
|
|
? ossl_quic_channel_get_max_idle_timeout_actual(ctx->qc->ch)
|
|
: ossl_quic_channel_get_max_idle_timeout_peer_request(ctx->qc->ch);
|
|
break;
|
|
|
|
default:
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_UNSUPPORTED_CONFIG_VALUE_CLASS,
|
|
NULL);
|
|
goto err;
|
|
}
|
|
|
|
ret = 1;
|
|
err:
|
|
quic_unlock(ctx->qc);
|
|
if (ret && p_value_out != NULL)
|
|
*p_value_out = value_out;
|
|
|
|
return ret;
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
static int qc_get_stream_avail(QCTX *ctx, uint32_t class_,
|
|
int is_uni, int is_remote,
|
|
uint64_t *value)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (class_ != SSL_VALUE_CLASS_GENERIC) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_UNSUPPORTED_CONFIG_VALUE_CLASS,
|
|
NULL);
|
|
return 0;
|
|
}
|
|
|
|
quic_lock(ctx->qc);
|
|
|
|
*value = is_remote
|
|
? ossl_quic_channel_get_remote_stream_count_avail(ctx->qc->ch, is_uni)
|
|
: ossl_quic_channel_get_local_stream_count_avail(ctx->qc->ch, is_uni);
|
|
|
|
ret = 1;
|
|
quic_unlock(ctx->qc);
|
|
return ret;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int qctx_should_autotick(QCTX *ctx)
|
|
{
|
|
int event_handling_mode;
|
|
|
|
if (ctx->is_stream) {
|
|
event_handling_mode = ctx->xso->event_handling_mode;
|
|
if (event_handling_mode != SSL_VALUE_EVENT_HANDLING_MODE_INHERIT)
|
|
return event_handling_mode != SSL_VALUE_EVENT_HANDLING_MODE_EXPLICIT;
|
|
}
|
|
|
|
event_handling_mode = ctx->qc->event_handling_mode;
|
|
return event_handling_mode != SSL_VALUE_EVENT_HANDLING_MODE_EXPLICIT;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static void qctx_maybe_autotick(QCTX *ctx)
|
|
{
|
|
if (!qctx_should_autotick(ctx))
|
|
return;
|
|
|
|
ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(ctx->qc->ch), 0);
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
static int qc_getset_event_handling(QCTX *ctx, uint32_t class_,
|
|
uint64_t *p_value_out,
|
|
uint64_t *p_value_in)
|
|
{
|
|
int ret = 0;
|
|
uint64_t value_out = 0;
|
|
|
|
quic_lock(ctx->qc);
|
|
|
|
if (class_ != SSL_VALUE_CLASS_GENERIC) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_UNSUPPORTED_CONFIG_VALUE_CLASS,
|
|
NULL);
|
|
goto err;
|
|
}
|
|
|
|
if (p_value_in != NULL) {
|
|
switch (*p_value_in) {
|
|
case SSL_VALUE_EVENT_HANDLING_MODE_INHERIT:
|
|
case SSL_VALUE_EVENT_HANDLING_MODE_IMPLICIT:
|
|
case SSL_VALUE_EVENT_HANDLING_MODE_EXPLICIT:
|
|
break;
|
|
default:
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_PASSED_INVALID_ARGUMENT,
|
|
NULL);
|
|
goto err;
|
|
}
|
|
|
|
value_out = *p_value_in;
|
|
if (ctx->is_stream)
|
|
ctx->xso->event_handling_mode = (int)value_out;
|
|
else
|
|
ctx->qc->event_handling_mode = (int)value_out;
|
|
} else {
|
|
value_out = ctx->is_stream
|
|
? ctx->xso->event_handling_mode
|
|
: ctx->qc->event_handling_mode;
|
|
}
|
|
|
|
ret = 1;
|
|
err:
|
|
quic_unlock(ctx->qc);
|
|
if (ret && p_value_out != NULL)
|
|
*p_value_out = value_out;
|
|
|
|
return ret;
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
static int qc_get_stream_write_buf_stat(QCTX *ctx, uint32_t class_,
|
|
uint64_t *p_value_out,
|
|
size_t (*getter)(QUIC_SSTREAM *sstream))
|
|
{
|
|
int ret = 0;
|
|
size_t value = 0;
|
|
|
|
quic_lock(ctx->qc);
|
|
|
|
if (class_ != SSL_VALUE_CLASS_GENERIC) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_UNSUPPORTED_CONFIG_VALUE_CLASS,
|
|
NULL);
|
|
goto err;
|
|
}
|
|
|
|
if (ctx->xso == NULL) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_NO_STREAM, NULL);
|
|
goto err;
|
|
}
|
|
|
|
if (!ossl_quic_stream_has_send(ctx->xso->stream)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_STREAM_RECV_ONLY, NULL);
|
|
goto err;
|
|
}
|
|
|
|
if (ossl_quic_stream_has_send_buffer(ctx->xso->stream))
|
|
value = getter(ctx->xso->stream->sstream);
|
|
|
|
ret = 1;
|
|
err:
|
|
quic_unlock(ctx->qc);
|
|
*p_value_out = (uint64_t)value;
|
|
return ret;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int expect_quic_for_value(SSL *s, QCTX *ctx, uint32_t id)
|
|
{
|
|
switch (id) {
|
|
case SSL_VALUE_EVENT_HANDLING_MODE:
|
|
case SSL_VALUE_STREAM_WRITE_BUF_SIZE:
|
|
case SSL_VALUE_STREAM_WRITE_BUF_USED:
|
|
case SSL_VALUE_STREAM_WRITE_BUF_AVAIL:
|
|
return expect_quic(s, ctx);
|
|
default:
|
|
return expect_quic_conn_only(s, ctx);
|
|
}
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_get_value_uint(SSL *s, uint32_t class_, uint32_t id,
|
|
uint64_t *value)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic_for_value(s, &ctx, id))
|
|
return 0;
|
|
|
|
if (value == NULL)
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx,
|
|
ERR_R_PASSED_INVALID_ARGUMENT, NULL);
|
|
|
|
switch (id) {
|
|
case SSL_VALUE_QUIC_IDLE_TIMEOUT:
|
|
return qc_getset_idle_timeout(&ctx, class_, value, NULL);
|
|
|
|
case SSL_VALUE_QUIC_STREAM_BIDI_LOCAL_AVAIL:
|
|
return qc_get_stream_avail(&ctx, class_, /*uni=*/0, /*remote=*/0, value);
|
|
case SSL_VALUE_QUIC_STREAM_BIDI_REMOTE_AVAIL:
|
|
return qc_get_stream_avail(&ctx, class_, /*uni=*/0, /*remote=*/1, value);
|
|
case SSL_VALUE_QUIC_STREAM_UNI_LOCAL_AVAIL:
|
|
return qc_get_stream_avail(&ctx, class_, /*uni=*/1, /*remote=*/0, value);
|
|
case SSL_VALUE_QUIC_STREAM_UNI_REMOTE_AVAIL:
|
|
return qc_get_stream_avail(&ctx, class_, /*uni=*/1, /*remote=*/1, value);
|
|
|
|
case SSL_VALUE_EVENT_HANDLING_MODE:
|
|
return qc_getset_event_handling(&ctx, class_, value, NULL);
|
|
|
|
case SSL_VALUE_STREAM_WRITE_BUF_SIZE:
|
|
return qc_get_stream_write_buf_stat(&ctx, class_, value,
|
|
ossl_quic_sstream_get_buffer_size);
|
|
case SSL_VALUE_STREAM_WRITE_BUF_USED:
|
|
return qc_get_stream_write_buf_stat(&ctx, class_, value,
|
|
ossl_quic_sstream_get_buffer_used);
|
|
case SSL_VALUE_STREAM_WRITE_BUF_AVAIL:
|
|
return qc_get_stream_write_buf_stat(&ctx, class_, value,
|
|
ossl_quic_sstream_get_buffer_avail);
|
|
|
|
default:
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx,
|
|
SSL_R_UNSUPPORTED_CONFIG_VALUE, NULL);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_set_value_uint(SSL *s, uint32_t class_, uint32_t id,
|
|
uint64_t value)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic_for_value(s, &ctx, id))
|
|
return 0;
|
|
|
|
switch (id) {
|
|
case SSL_VALUE_QUIC_IDLE_TIMEOUT:
|
|
return qc_getset_idle_timeout(&ctx, class_, NULL, &value);
|
|
|
|
case SSL_VALUE_EVENT_HANDLING_MODE:
|
|
return qc_getset_event_handling(&ctx, class_, NULL, &value);
|
|
|
|
default:
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(&ctx,
|
|
SSL_R_UNSUPPORTED_CONFIG_VALUE, NULL);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* SSL_accept_stream
|
|
* -----------------
|
|
*/
|
|
struct wait_for_incoming_stream_args {
|
|
QCTX *ctx;
|
|
QUIC_STREAM *qs;
|
|
};
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int wait_for_incoming_stream(void *arg)
|
|
{
|
|
struct wait_for_incoming_stream_args *args = arg;
|
|
QUIC_CONNECTION *qc = args->ctx->qc;
|
|
QUIC_STREAM_MAP *qsm = ossl_quic_channel_get_qsm(qc->ch);
|
|
|
|
if (!quic_mutation_allowed(qc, /*req_active=*/1)) {
|
|
/* If connection is torn down due to an error while blocking, stop. */
|
|
QUIC_RAISE_NON_NORMAL_ERROR(args->ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
return -1;
|
|
}
|
|
|
|
args->qs = ossl_quic_stream_map_peek_accept_queue(qsm);
|
|
if (args->qs != NULL)
|
|
return 1; /* got a stream */
|
|
|
|
return 0; /* did not get a stream, keep trying */
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
SSL *ossl_quic_accept_stream(SSL *s, uint64_t flags)
|
|
{
|
|
QCTX ctx;
|
|
int ret;
|
|
SSL *new_s = NULL;
|
|
QUIC_STREAM_MAP *qsm;
|
|
QUIC_STREAM *qs;
|
|
QUIC_XSO *xso;
|
|
OSSL_RTT_INFO rtt_info;
|
|
|
|
if (!expect_quic_conn_only(s, &ctx))
|
|
return NULL;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
if (qc_get_effective_incoming_stream_policy(ctx.qc)
|
|
== SSL_INCOMING_STREAM_POLICY_REJECT) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, NULL);
|
|
goto out;
|
|
}
|
|
|
|
qsm = ossl_quic_channel_get_qsm(ctx.qc->ch);
|
|
|
|
qs = ossl_quic_stream_map_peek_accept_queue(qsm);
|
|
if (qs == NULL) {
|
|
if (qc_blocking_mode(ctx.qc)
|
|
&& (flags & SSL_ACCEPT_STREAM_NO_BLOCK) == 0) {
|
|
struct wait_for_incoming_stream_args args;
|
|
|
|
args.ctx = &ctx;
|
|
args.qs = NULL;
|
|
|
|
ret = block_until_pred(ctx.qc, wait_for_incoming_stream, &args, 0);
|
|
if (ret == 0) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
goto out;
|
|
} else if (ret < 0 || args.qs == NULL) {
|
|
goto out;
|
|
}
|
|
|
|
qs = args.qs;
|
|
} else {
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
xso = create_xso_from_stream(ctx.qc, qs);
|
|
if (xso == NULL)
|
|
goto out;
|
|
|
|
ossl_statm_get_rtt_info(ossl_quic_channel_get_statm(ctx.qc->ch), &rtt_info);
|
|
ossl_quic_stream_map_remove_from_accept_queue(qsm, qs,
|
|
rtt_info.smoothed_rtt);
|
|
new_s = &xso->ssl;
|
|
|
|
/* Calling this function inhibits default XSO autocreation. */
|
|
qc_touch_default_xso(ctx.qc); /* inhibits default XSO */
|
|
|
|
out:
|
|
quic_unlock(ctx.qc);
|
|
return new_s;
|
|
}
|
|
|
|
/*
|
|
* SSL_get_accept_stream_queue_len
|
|
* -------------------------------
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
size_t ossl_quic_get_accept_stream_queue_len(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
size_t v;
|
|
|
|
if (!expect_quic_conn_only(s, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
v = ossl_quic_stream_map_get_total_accept_queue_len(ossl_quic_channel_get_qsm(ctx.qc->ch));
|
|
|
|
quic_unlock(ctx.qc);
|
|
return v;
|
|
}
|
|
|
|
/*
|
|
* SSL_stream_reset
|
|
* ----------------
|
|
*/
|
|
int ossl_quic_stream_reset(SSL *ssl,
|
|
const SSL_STREAM_RESET_ARGS *args,
|
|
size_t args_len)
|
|
{
|
|
QCTX ctx;
|
|
QUIC_STREAM_MAP *qsm;
|
|
QUIC_STREAM *qs;
|
|
uint64_t error_code;
|
|
int ok, err;
|
|
|
|
if (!expect_quic_with_stream_lock(ssl, /*remote_init=*/0, /*io=*/0, &ctx))
|
|
return 0;
|
|
|
|
qsm = ossl_quic_channel_get_qsm(ctx.qc->ch);
|
|
qs = ctx.xso->stream;
|
|
error_code = (args != NULL ? args->quic_error_code : 0);
|
|
|
|
if (!quic_validate_for_write(ctx.xso, &err)) {
|
|
ok = QUIC_RAISE_NON_NORMAL_ERROR(&ctx, err, NULL);
|
|
goto err;
|
|
}
|
|
|
|
ok = ossl_quic_stream_map_reset_stream_send_part(qsm, qs, error_code);
|
|
if (ok)
|
|
ctx.xso->requested_reset = 1;
|
|
|
|
err:
|
|
quic_unlock(ctx.qc);
|
|
return ok;
|
|
}
|
|
|
|
/*
|
|
* SSL_get_stream_read_state
|
|
* -------------------------
|
|
*/
|
|
static void quic_classify_stream(QUIC_CONNECTION *qc,
|
|
QUIC_STREAM *qs,
|
|
int is_write,
|
|
int *state,
|
|
uint64_t *app_error_code)
|
|
{
|
|
int local_init;
|
|
uint64_t final_size;
|
|
|
|
local_init = (ossl_quic_stream_is_server_init(qs) == qc->as_server);
|
|
|
|
if (app_error_code != NULL)
|
|
*app_error_code = UINT64_MAX;
|
|
else
|
|
app_error_code = &final_size; /* throw away value */
|
|
|
|
if (!ossl_quic_stream_is_bidi(qs) && local_init != is_write) {
|
|
/*
|
|
* Unidirectional stream and this direction of transmission doesn't
|
|
* exist.
|
|
*/
|
|
*state = SSL_STREAM_STATE_WRONG_DIR;
|
|
} else if (ossl_quic_channel_is_term_any(qc->ch)) {
|
|
/* Connection already closed. */
|
|
*state = SSL_STREAM_STATE_CONN_CLOSED;
|
|
} else if (!is_write && qs->recv_state == QUIC_RSTREAM_STATE_DATA_READ) {
|
|
/* Application has read a FIN. */
|
|
*state = SSL_STREAM_STATE_FINISHED;
|
|
} else if ((!is_write && qs->stop_sending)
|
|
|| (is_write && ossl_quic_stream_send_is_reset(qs))) {
|
|
/*
|
|
* Stream has been reset locally. FIN takes precedence over this for the
|
|
* read case as the application need not care if the stream is reset
|
|
* after a FIN has been successfully processed.
|
|
*/
|
|
*state = SSL_STREAM_STATE_RESET_LOCAL;
|
|
*app_error_code = !is_write
|
|
? qs->stop_sending_aec
|
|
: qs->reset_stream_aec;
|
|
} else if ((!is_write && ossl_quic_stream_recv_is_reset(qs))
|
|
|| (is_write && qs->peer_stop_sending)) {
|
|
/*
|
|
* Stream has been reset remotely. */
|
|
*state = SSL_STREAM_STATE_RESET_REMOTE;
|
|
*app_error_code = !is_write
|
|
? qs->peer_reset_stream_aec
|
|
: qs->peer_stop_sending_aec;
|
|
} else if (is_write && ossl_quic_sstream_get_final_size(qs->sstream,
|
|
&final_size)) {
|
|
/*
|
|
* Stream has been finished. Stream reset takes precedence over this for
|
|
* the write case as peer may not have received all data.
|
|
*/
|
|
*state = SSL_STREAM_STATE_FINISHED;
|
|
} else {
|
|
/* Stream still healthy. */
|
|
*state = SSL_STREAM_STATE_OK;
|
|
}
|
|
}
|
|
|
|
static int quic_get_stream_state(SSL *ssl, int is_write)
|
|
{
|
|
QCTX ctx;
|
|
int state;
|
|
|
|
if (!expect_quic_with_stream_lock(ssl, /*remote_init=*/-1, /*io=*/0, &ctx))
|
|
return SSL_STREAM_STATE_NONE;
|
|
|
|
quic_classify_stream(ctx.qc, ctx.xso->stream, is_write, &state, NULL);
|
|
quic_unlock(ctx.qc);
|
|
return state;
|
|
}
|
|
|
|
int ossl_quic_get_stream_read_state(SSL *ssl)
|
|
{
|
|
return quic_get_stream_state(ssl, /*is_write=*/0);
|
|
}
|
|
|
|
/*
|
|
* SSL_get_stream_write_state
|
|
* --------------------------
|
|
*/
|
|
int ossl_quic_get_stream_write_state(SSL *ssl)
|
|
{
|
|
return quic_get_stream_state(ssl, /*is_write=*/1);
|
|
}
|
|
|
|
/*
|
|
* SSL_get_stream_read_error_code
|
|
* ------------------------------
|
|
*/
|
|
static int quic_get_stream_error_code(SSL *ssl, int is_write,
|
|
uint64_t *app_error_code)
|
|
{
|
|
QCTX ctx;
|
|
int state;
|
|
|
|
if (!expect_quic_with_stream_lock(ssl, /*remote_init=*/-1, /*io=*/0, &ctx))
|
|
return -1;
|
|
|
|
quic_classify_stream(ctx.qc, ctx.xso->stream, /*is_write=*/0,
|
|
&state, app_error_code);
|
|
|
|
quic_unlock(ctx.qc);
|
|
switch (state) {
|
|
case SSL_STREAM_STATE_FINISHED:
|
|
return 0;
|
|
case SSL_STREAM_STATE_RESET_LOCAL:
|
|
case SSL_STREAM_STATE_RESET_REMOTE:
|
|
return 1;
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
int ossl_quic_get_stream_read_error_code(SSL *ssl, uint64_t *app_error_code)
|
|
{
|
|
return quic_get_stream_error_code(ssl, /*is_write=*/0, app_error_code);
|
|
}
|
|
|
|
/*
|
|
* SSL_get_stream_write_error_code
|
|
* -------------------------------
|
|
*/
|
|
int ossl_quic_get_stream_write_error_code(SSL *ssl, uint64_t *app_error_code)
|
|
{
|
|
return quic_get_stream_error_code(ssl, /*is_write=*/1, app_error_code);
|
|
}
|
|
|
|
/*
|
|
* Write buffer size mutation
|
|
* --------------------------
|
|
*/
|
|
int ossl_quic_set_write_buffer_size(SSL *ssl, size_t size)
|
|
{
|
|
int ret = 0;
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic_with_stream_lock(ssl, /*remote_init=*/-1, /*io=*/0, &ctx))
|
|
return 0;
|
|
|
|
if (!ossl_quic_stream_has_send(ctx.xso->stream)) {
|
|
/* Called on a unidirectional receive-only stream - error. */
|
|
QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, NULL);
|
|
goto out;
|
|
}
|
|
|
|
if (!ossl_quic_stream_has_send_buffer(ctx.xso->stream)) {
|
|
/*
|
|
* If the stream has a send part but we have disposed of it because we
|
|
* no longer need it, this is a no-op.
|
|
*/
|
|
ret = 1;
|
|
goto out;
|
|
}
|
|
|
|
if (!ossl_quic_sstream_set_buffer_size(ctx.xso->stream->sstream, size)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_INTERNAL_ERROR, NULL);
|
|
goto out;
|
|
}
|
|
|
|
ret = 1;
|
|
|
|
out:
|
|
quic_unlock(ctx.qc);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* SSL_get_conn_close_info
|
|
* -----------------------
|
|
*/
|
|
int ossl_quic_get_conn_close_info(SSL *ssl,
|
|
SSL_CONN_CLOSE_INFO *info,
|
|
size_t info_len)
|
|
{
|
|
QCTX ctx;
|
|
const QUIC_TERMINATE_CAUSE *tc;
|
|
|
|
if (!expect_quic_conn_only(ssl, &ctx))
|
|
return -1;
|
|
|
|
tc = ossl_quic_channel_get_terminate_cause(ctx.qc->ch);
|
|
if (tc == NULL)
|
|
return 0;
|
|
|
|
info->error_code = tc->error_code;
|
|
info->frame_type = tc->frame_type;
|
|
info->reason = tc->reason;
|
|
info->reason_len = tc->reason_len;
|
|
info->flags = 0;
|
|
if (!tc->remote)
|
|
info->flags |= SSL_CONN_CLOSE_FLAG_LOCAL;
|
|
if (!tc->app)
|
|
info->flags |= SSL_CONN_CLOSE_FLAG_TRANSPORT;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* SSL_key_update
|
|
* --------------
|
|
*/
|
|
int ossl_quic_key_update(SSL *ssl, int update_type)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic_conn_only(ssl, &ctx))
|
|
return 0;
|
|
|
|
switch (update_type) {
|
|
case SSL_KEY_UPDATE_NOT_REQUESTED:
|
|
/*
|
|
* QUIC signals peer key update implicily by triggering a local
|
|
* spontaneous TXKU. Silently upgrade this to SSL_KEY_UPDATE_REQUESTED.
|
|
*/
|
|
case SSL_KEY_UPDATE_REQUESTED:
|
|
break;
|
|
|
|
default:
|
|
QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_PASSED_INVALID_ARGUMENT, NULL);
|
|
return 0;
|
|
}
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
/* Attempt to perform a TXKU. */
|
|
if (!ossl_quic_channel_trigger_txku(ctx.qc->ch)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(&ctx, SSL_R_TOO_MANY_KEY_UPDATES, NULL);
|
|
quic_unlock(ctx.qc);
|
|
return 0;
|
|
}
|
|
|
|
quic_unlock(ctx.qc);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* SSL_get_key_update_type
|
|
* -----------------------
|
|
*/
|
|
int ossl_quic_get_key_update_type(const SSL *s)
|
|
{
|
|
/*
|
|
* We always handle key updates immediately so a key update is never
|
|
* pending.
|
|
*/
|
|
return SSL_KEY_UPDATE_NONE;
|
|
}
|
|
|
|
/*
|
|
* QUIC Front-End I/O API: SSL_CTX Management
|
|
* ==========================================
|
|
*/
|
|
|
|
long ossl_quic_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
|
|
{
|
|
switch (cmd) {
|
|
default:
|
|
return ssl3_ctx_ctrl(ctx, cmd, larg, parg);
|
|
}
|
|
}
|
|
|
|
long ossl_quic_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic_conn_only(s, &ctx))
|
|
return 0;
|
|
|
|
switch (cmd) {
|
|
case SSL_CTRL_SET_MSG_CALLBACK:
|
|
ossl_quic_channel_set_msg_callback(ctx.qc->ch, (ossl_msg_cb)fp,
|
|
&ctx.qc->ssl);
|
|
/* This callback also needs to be set on the internal SSL object */
|
|
return ssl3_callback_ctrl(ctx.qc->tls, cmd, fp);;
|
|
|
|
default:
|
|
/* Probably a TLS related ctrl. Defer to our internal SSL object */
|
|
return ssl3_callback_ctrl(ctx.qc->tls, cmd, fp);
|
|
}
|
|
}
|
|
|
|
long ossl_quic_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
|
|
{
|
|
return ssl3_ctx_callback_ctrl(ctx, cmd, fp);
|
|
}
|
|
|
|
int ossl_quic_renegotiate_check(SSL *ssl, int initok)
|
|
{
|
|
/* We never do renegotiation. */
|
|
return 0;
|
|
}
|
|
|
|
const SSL_CIPHER *ossl_quic_get_cipher_by_char(const unsigned char *p)
|
|
{
|
|
const SSL_CIPHER *ciph = ssl3_get_cipher_by_char(p);
|
|
|
|
if ((ciph->algorithm2 & SSL_QUIC) == 0)
|
|
return NULL;
|
|
|
|
return ciph;
|
|
}
|
|
|
|
/*
|
|
* These functions define the TLSv1.2 (and below) ciphers that are supported by
|
|
* the SSL_METHOD. Since QUIC only supports TLSv1.3 we don't support any.
|
|
*/
|
|
|
|
int ossl_quic_num_ciphers(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
const SSL_CIPHER *ossl_quic_get_cipher(unsigned int u)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* SSL_get_shutdown()
|
|
* ------------------
|
|
*/
|
|
int ossl_quic_get_shutdown(const SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
int shut = 0;
|
|
|
|
if (!expect_quic_conn_only(s, &ctx))
|
|
return 0;
|
|
|
|
if (ossl_quic_channel_is_term_any(ctx.qc->ch)) {
|
|
shut |= SSL_SENT_SHUTDOWN;
|
|
if (!ossl_quic_channel_is_closing(ctx.qc->ch))
|
|
shut |= SSL_RECEIVED_SHUTDOWN;
|
|
}
|
|
|
|
return shut;
|
|
}
|
|
|
|
/*
|
|
* QUIC Polling Support APIs
|
|
* =========================
|
|
*/
|
|
|
|
/* Do we have the R (read) condition? */
|
|
QUIC_NEEDS_LOCK
|
|
static int test_poll_event_r(QUIC_XSO *xso)
|
|
{
|
|
int fin = 0;
|
|
size_t avail = 0;
|
|
|
|
return ossl_quic_stream_has_recv_buffer(xso->stream)
|
|
&& ossl_quic_rstream_available(xso->stream->rstream, &avail, &fin)
|
|
&& (avail > 0 || (fin && !xso->retired_fin));
|
|
}
|
|
|
|
/* Do we have the ER (exception: read) condition? */
|
|
QUIC_NEEDS_LOCK
|
|
static int test_poll_event_er(QUIC_XSO *xso)
|
|
{
|
|
return ossl_quic_stream_has_recv(xso->stream)
|
|
&& ossl_quic_stream_recv_is_reset(xso->stream)
|
|
&& !xso->retired_fin;
|
|
}
|
|
|
|
/* Do we have the W (write) condition? */
|
|
QUIC_NEEDS_LOCK
|
|
static int test_poll_event_w(QUIC_XSO *xso)
|
|
{
|
|
return !xso->conn->shutting_down
|
|
&& ossl_quic_stream_has_send_buffer(xso->stream)
|
|
&& ossl_quic_sstream_get_buffer_avail(xso->stream->sstream)
|
|
&& !ossl_quic_sstream_get_final_size(xso->stream->sstream, NULL)
|
|
&& quic_mutation_allowed(xso->conn, /*req_active=*/1);
|
|
}
|
|
|
|
/* Do we have the EW (exception: write) condition? */
|
|
QUIC_NEEDS_LOCK
|
|
static int test_poll_event_ew(QUIC_XSO *xso)
|
|
{
|
|
return ossl_quic_stream_has_send(xso->stream)
|
|
&& xso->stream->peer_stop_sending
|
|
&& !xso->requested_reset
|
|
&& !xso->conn->shutting_down;
|
|
}
|
|
|
|
/* Do we have the EC (exception: connection) condition? */
|
|
QUIC_NEEDS_LOCK
|
|
static int test_poll_event_ec(QUIC_CONNECTION *qc)
|
|
{
|
|
return ossl_quic_channel_is_term_any(qc->ch);
|
|
}
|
|
|
|
/* Do we have the ECD (exception: connection drained) condition? */
|
|
QUIC_NEEDS_LOCK
|
|
static int test_poll_event_ecd(QUIC_CONNECTION *qc)
|
|
{
|
|
return ossl_quic_channel_is_terminated(qc->ch);
|
|
}
|
|
|
|
/* Do we have the IS (incoming: stream) condition? */
|
|
QUIC_NEEDS_LOCK
|
|
static int test_poll_event_is(QUIC_CONNECTION *qc, int is_uni)
|
|
{
|
|
return ossl_quic_stream_map_get_accept_queue_len(ossl_quic_channel_get_qsm(qc->ch),
|
|
is_uni);
|
|
}
|
|
|
|
/* Do we have the OS (outgoing: stream) condition? */
|
|
QUIC_NEEDS_LOCK
|
|
static int test_poll_event_os(QUIC_CONNECTION *qc, int is_uni)
|
|
{
|
|
/* Is it currently possible for us to make an outgoing stream? */
|
|
return quic_mutation_allowed(qc, /*req_active=*/1)
|
|
&& ossl_quic_channel_get_local_stream_count_avail(qc->ch, is_uni) > 0;
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_conn_poll_events(SSL *ssl, uint64_t events, int do_tick,
|
|
uint64_t *p_revents)
|
|
{
|
|
QCTX ctx;
|
|
uint64_t revents = 0;
|
|
|
|
if (!expect_quic(ssl, &ctx))
|
|
return 0;
|
|
|
|
quic_lock(ctx.qc);
|
|
|
|
if (do_tick)
|
|
ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(ctx.qc->ch), 0);
|
|
|
|
if (ctx.xso != NULL) {
|
|
/* SSL object has a stream component. */
|
|
|
|
if ((events & SSL_POLL_EVENT_R) != 0
|
|
&& test_poll_event_r(ctx.xso))
|
|
revents |= SSL_POLL_EVENT_R;
|
|
|
|
if ((events & SSL_POLL_EVENT_ER) != 0
|
|
&& test_poll_event_er(ctx.xso))
|
|
revents |= SSL_POLL_EVENT_ER;
|
|
|
|
if ((events & SSL_POLL_EVENT_W) != 0
|
|
&& test_poll_event_w(ctx.xso))
|
|
revents |= SSL_POLL_EVENT_W;
|
|
|
|
if ((events & SSL_POLL_EVENT_EW) != 0
|
|
&& test_poll_event_ew(ctx.xso))
|
|
revents |= SSL_POLL_EVENT_EW;
|
|
}
|
|
|
|
if (!ctx.is_stream) {
|
|
if ((events & SSL_POLL_EVENT_EC) != 0
|
|
&& test_poll_event_ec(ctx.qc))
|
|
revents |= SSL_POLL_EVENT_EC;
|
|
|
|
if ((events & SSL_POLL_EVENT_ECD) != 0
|
|
&& test_poll_event_ecd(ctx.qc))
|
|
revents |= SSL_POLL_EVENT_ECD;
|
|
|
|
if ((events & SSL_POLL_EVENT_ISB) != 0
|
|
&& test_poll_event_is(ctx.qc, /*uni=*/0))
|
|
revents |= SSL_POLL_EVENT_ISB;
|
|
|
|
if ((events & SSL_POLL_EVENT_ISU) != 0
|
|
&& test_poll_event_is(ctx.qc, /*uni=*/1))
|
|
revents |= SSL_POLL_EVENT_ISU;
|
|
|
|
if ((events & SSL_POLL_EVENT_OSB) != 0
|
|
&& test_poll_event_os(ctx.qc, /*uni=*/0))
|
|
revents |= SSL_POLL_EVENT_OSB;
|
|
|
|
if ((events & SSL_POLL_EVENT_OSU) != 0
|
|
&& test_poll_event_os(ctx.qc, /*uni=*/1))
|
|
revents |= SSL_POLL_EVENT_OSU;
|
|
}
|
|
|
|
quic_unlock(ctx.qc);
|
|
*p_revents = revents;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Internal Testing APIs
|
|
* =====================
|
|
*/
|
|
|
|
QUIC_CHANNEL *ossl_quic_conn_get_channel(SSL *s)
|
|
{
|
|
QCTX ctx;
|
|
|
|
if (!expect_quic_conn_only(s, &ctx))
|
|
return NULL;
|
|
|
|
return ctx.qc->ch;
|
|
}
|
|
|
|
int ossl_quic_set_diag_title(SSL_CTX *ctx, const char *title)
|
|
{
|
|
#ifndef OPENSSL_NO_QLOG
|
|
OPENSSL_free(ctx->qlog_title);
|
|
ctx->qlog_title = NULL;
|
|
|
|
if (title == NULL)
|
|
return 1;
|
|
|
|
if ((ctx->qlog_title = OPENSSL_strdup(title)) == NULL)
|
|
return 0;
|
|
#endif
|
|
|
|
return 1;
|
|
}
|